My personal theory is that vegans put in way more effort to make their food taste good than non-vegans, and we eat an extremely wide variety of foods, so eating things like "steak" or "chicken" is generally a very boring flavor experience. I had a bite of "good steak" and thought...this is alright, but I could make better-tasting seitan!
That does not seem much better. You may as well say "I don't like alcohol, I tried 'good beer', wine, and liquor".
There are particular animals that I like or do not like (salmon for instance I have never been a fan of with any preparation I have tried) and various preparations/cuts that I do not like (lamb chops, most preparations of steak besides rare (preferably Pittsburgh rare, which is sadly difficult to find or prepare yourself at home) and most baked/broiled preparations of poultry). These classifications are again only scratching the surface of course, basically just breaking the question down to "ale or lager? white wine or red? Dark liquor, or clear?"
Regardless if it isn't your thing, then knock yourself out, but you should be sure that you don't fall into the trap of being confused why others don't share your personal preferences. (Or worse, trying to suggest that people who don't share your personal preferences are deluding themselves; lying to themselves about their own tastes.) I don't find myself annoyed by veganism/vegetariansim until I really get one of those vibes coming across.
That statement is about as bizarre as "I tasted alcohol once, I don't understand what the big deal is".