this has become one of my favorite quotes recently:
"If taste is just personal preference, then everyone’s taste is already perfect.” - Paul Graham
@paulg makes a very solid point here, the essence of taste is in fact beyond mere personal preference alone
a good way I like to think about taste is that it's a combination of personal preference + what's societally considered of good quality (great aesthetic and great UX)
when someone asks me for examples of good taste, I usually like to point them towards
@linear
the people at linear deeply care about their product, beyond mere product functionality. every interaction, every animation, every visual component; all of these are carefully thought through and executed in a tasteful manner
if you're able to discern good UI/UX in conjunction with societal/cultural standards, I'd say you have good taste