I am in the group that thinks posting on MD is more official. You have even given the reason why I think that way. I need an app to get it. Don't think so. And all likely the app does not allow me to save the series. I could only read it with the app.
The biggest reason is others like to tag the translators work with there logo. That's a big no-no on MD, Also likely they have resized or converted into a different media container. re: webp or jpg <> png
I'm just saying that the
actual official licensed chapters are free on the publisher's alpha manga app and that it's currently ahead of the scans, but the official chapters release monthly. If you want to "save" it, you'd have to do this thing called buying it, because that's what being official means.
Not legit wise, clean rips of the official chapters are easily available on other sites (because MD tries to be friendlier with official pubs), if there's issues, well that's on whoever/whatever stole the content and posted it 🤷♂️.
Y'all obviously enjoy the series, but it sucks that even if publishers make the latest chapters free in HD without any split chapter, coin/ink/digital currency or ad nonsense, people still won't read it.