This is why you need to be innoculated with The Man Who Came Too Early/Hard To Be A God/Merchant Princes. Western-Style Portal Fantasies have always had flaws of their own (especially the "Guy With Shed implements industrial revolution" subtype which in a couple of examples devolves into a cringe harem fantasy (glares at The Radiant Knight)), but they've generally been better. But now I see Isekai-style tropes infect them too.
This is why you need to be innoculated with The Man Who Came Too Early/Hard To Be A God/Merchant Princes. Western-Style Portal Fantasies have always had flaws of their own (especially the "Guy With Shed implements industrial revolution" subtype which in a couple of examples devolves into a cringe harem fantasy (glares at The Radiant Knight)), but they've generally been better. But now I see Isekai-style tropes infect them too.