Isekai = inbred hentai? Hm. While most isekai isn't hentai in the sense of being pornographic, certainly it's often perverted, the better to attract the sort of fans who will pay tens of thousands of yen for a 1/6 scale statue of one of the love interests in a skimpy costume she never actually wore in the series. And the way the isekai genre is saturated with imitators and imitators-of-imitators, resulting in massive numbers of stories about people getting reincarnated into MMOs or otome games where the writer clearly has no experience with the genre in question and is just copying what happens in other isekai, could definitely lead people to call it "inbred." So yes, I think it's fair to...
Seriously, I follow some AI pixiv accounts and they can do really good stuff with the right prompts, some even share their prompts for other to copy.
And the dialog is just as bad, it's like your wrote it with AI, took whatever was spat out first, then ran THAT back and forth through google translate.