@flannan you don't need to be confused for details to be confusing. Speaking of wich, it's also funny when authors plug plotholes with all this "crappy otome" setting yet trying to add some kind of realistic concept, destroying alredy shaking suspension of disbelief.
Should I explain every minute thing? Changing isekai to high fantasy does not do magic, it just helps avoid common genre problems. Suspension of disbelief is one of them, by the way. Other then that, it helps avoid lazy writing where instead of developing world and characters everuthing presented as game mechanics wich is marginally less interesting. It also helps correcting "secondary" nature of written work, when reader supposed to know every setting of isekai to be into the series. Authors should at least try to improve their expesition skills instead of adding "required reading" to supposedely standalone work. And my personal dislike among this all is - and that what I have suggested in the first place - isekai setting often isn't needed. People don't need to write things that are useless, add nothing to the story, have no value for the work in general and frankly can possibly damage the storytelling if give in to temptation of lazy writing. If you writing isekai - at least make it useful for something. Other then black hair and eyes empowerment, of course.
And no, while a lot of works undergo seasonal rot, in isekai in particular it comes the moment driving point of the story is getting stale or being negated. For precise reason of isekai saturation. With isekai differentiating with one or two peculiarities, the moment this peculiarity gets boring so is whole story.
Also: ha, nice joke! Speaking of snobs while calling yourself too clever in the previous statement is a good one.