Right, sometimes all it takes is one horrendously bad chapter before its popularity goes in the decline, then it's a matter of when it will get axed/cancelled rather than if. Why exceptions like Rental Girlfriend still runs this long, though, your guess is as good as mine.
I am sorry but you talking off your ass, Manga in Japan is mainstream and, unlike comics that shotgun themselves into being niche for the people in their mid-20 by all they did in the 00's with the whole collectors crap, most series survive just fine due to the huge market that is, its even better with digital as series just get moved to the digital platform, something that comics to this day failed to do.
This isnt going to be some weird homo incel fantasy were a the MC is going around "slaying thots" because he is no-homo
wink with his buds with thicc bulging veiny ... oh right, I cannot write that word ... muscles or whatever the hell you thought this would be.
Everything I needed to know about how this would be going was in the first 10 pages of chapter 1, he is a shota and this is a bunch of very thirsty nee-sans with big boobies and they have sexo, be it implied or a bit more graphic.
Also Web Novel are usual self published, Sword Arts Online started as one and was later picked up for publication (the 10 years ... Asuna" "glup" come from the WN and was removed from the LN) so unless the author loses interrest they never get "cancelled" since nobody can cancel then, if they are picked in the past the author deleted the WN since that was likely in the contract but it seems to not happening that much lately as some authors even work on the WN and the LN at the same time, even if the WN gets a lower priority and gets updated less frequently.
And yes, this looks like they licensed the WN for this manga that is good because its less likely to end up as a advertisement for the LN like so many of the LN adaptation that after some volumes just end without the readers seeing the whole story. Chances are this will keep going until the end.
Seriously, why the hell people pick series that are literally ...
And then complain about? I mean ... coudnt you tell from chapter freaking 1?
And BTW ... the only thing she is making him do is
listen to them, she isnt making him to agree with then or anything else and she only did that when he refused, also he didnt even want to listen to her in the first place and she had to push him into listen what she was going ask.