@mommunism I'll give you the benefit of the doubt, but I've never really seen people advertise MangaDex because ads on agregators were super annoying. Just googling "what is wrong with agregator manga" gives you at least three different threads where the main argument is about agregator websites stealing the work of scanlators and making money off of it through ads. Its more about the questionnable morality of agregators than the
Also asking for donations to sustain yourself is different than aiming for profit. Scanlating has a cost (mostly from buying the raws but also the time you spend on it instead of working). Trying to reduce that cost through donations isn't making profit, it's just trying to sustain yourself. Most people don't donate through patreons/paypals anyway, and that doesn't stop the scanlators from working. That's pretty much what I'd call working for free.
Whether you do it for free or for the money
is morally different. It's not legally different, but I'm sure most people would agree that there is a difference in morality between trying to spread your favorite manga to a western audience that has no access to said manga for free and trying to earn money in place of the author for their work. Morality =/= legality in this case.
Scanlators earning money to sustain themselves through the process is also different from agregator who do nothing but take scanlators work, slap their own watermark on it, and earn money through the ads running on the website. At least scanlator put in some work, agregators don't.
Maybe I didn't express myself well when I said the paid content is unrelated, I mean, it's the same comic so yeah it's related. What I meant is that you can enjoy the free content without
needing to have the free content. Hence my example of a content becoming paid-for just after a cliffhanger, or in the middle of the plot. Here there is no plot anyway, so I see the paid content as more of a bonus. To keep with the musician example, it would be like musicians releasing a whole album for free, but there is a track with a different version (let's say a live version, or a different studio version). If you want access to the different version you have to pay, but the rest of the album is free. And yet you'd still be complaining that "it's a shitty practice because there is a track that is paid-for".
Most people online follow the business model of free -> paid, unless they work for a website like Webtoon and earn money through ads. Everyone got to sustain themselves one way or another, and because the internet is almost entirely free for the user (most of the money on the internet is ad revenues), if you're entirely independent and start on Twitter/Pixiv you're not earning anything unless you publish paid-for content (because you don't get ad revenue on Twitter). You probably don't need to follow this model when you're working for a publishing house or on a website designed for content creators (Youtube/Webtoon etc, where the website earn money through ads and give you a share of it). But if you're trying to sell paid-for content on Twitter you definitely need to build an audience first. And the best way to do that is to publish free content at first.
By the way, I also saw the "free->paid" model on some content creator websites/publishers such as Lezhin, where the first chapters are free and the later chapters are paid-for (which is a bit more questionnable imo). But even so, I don't think of it as being that much of problem. It's not my favorite business model for sure, but I can understand wanting to bait readers first before asking them to pay since you said it yourself : nobody would pay for a comic.
It's 100% about entitlement when you start to think that some things should be free just because you don't see value in them. If you don't like something, you don't buy it and ignore it, you don't ask for it to be free. You're also complaining about a free translation, posted on a free ad-free website, just because there is one page redirecting to the author's paid for content in order to support him. If that's not entitlement I don't know what that is.
I'd like to have an official statement from MangaDex on the matter, but seeing how they never took action against it I don't think they have anything against this format. I think that basically anything goes as long as it's not just a drawing (there is a story) and that it has been translated. Maybe I'm wrong on this one, I'm not from the staff so I can't speak for them and neither can you.
However, I must say that as long as it finds its public I don't see what's wrong with it, it just means more variety imo. If your problem is about the quality, then to be honest you can come back after we got rid of the dozens of very low quality stale isekais and/or bad harem mangas that makes for the shittiest pace, the most horrible drawings, the worst plots and the most terrible character writings that are on this website. Because believe me, there are far worse works out here than this. In the end, as you said, it's more of an opinion than an argument, but I don't think this is rock bottom in terms of quality. Sure this isn't the most profound work ever either, but it's far from being the worse.
And I must apologize because that was a long ass answer.