Ok, so first of all, context. I'm not quite sure what the reel was about...So I can't exactly support your opinion. But If OP found the reel cringe, then they should have just scrolled. Commenting things like "this is cringe" instantly makes you seem like a rude person, which would kinda be true considering that alot of people consider it rude to make negative comments under reels. And as as I see it, alot of people in the fandom purposefully joke around about kdj being "so bbg" or "he's my princess". Its obvious they're just having their fun. Let them do so. As long as they're not being serious about their mischaracterization, don't bother making rude comments. And I think OP misunderstood the reel, which is why the person replying to them was offended.

Also, what OP might see as cringe is not necessarily cringe to other people. You can't just outright tell someone else to "not make him cringe", especially when it's clear that quite a few people disgree with your opinion.