There are some exceptions at times (like pickles), but for the most part, I hate the texture of crunchy vegetables. Particularly onions, broccoli, and cauliflower, but pretty much any veggie, is worse uncooked or undercooked imo. I hate most raw vegetables by themselves or in salads, but undercooked ones may be even worse because I was promised and expecting something cooked. Crunchy peppers or onions ruin a pizza as one example. Under-done carrots and potatoes in a curry, which I had yesterday, is another perfect example.
This may not be a universally unpopular opinion but I definitely feel like I’ve had a lot of people seem surprised by me not liking raw veggies.
I dunno man, lately I’ve seen the onion thing on a lot of tacos and it’s being touted as the authentic Mexican way (and white onions too). And the burger thing I’ll admit is not incredibly common but it’s happened to me many times over the years and it’s always a shock. On hotdogs with chili it’s basically standard.