Like most questions, it depends, and has changed over time.
At WDW, our favorite buffet has been Tusker House for the variety.
We’ve done Crystal Palace once just to see Tigger on my bday lol. Didn’t expect much from the food, which is probably why it was better than expected.
Biergarten - once in the 90’s and never again. That is not my kind of food.
Haven’t done Boma; for the price we’ve always chosen Jiko. I’d hate to miss a Jiko meal for even an above average buffet.
We mostly choose nicer restaurants at WDW now, but not always.
I do not love touching all the serving spoons touched by so many other people (since long before covid.)
Outside Disney, we used to go to Sweet Tomatoes buffet and a handful of others, but not so much lately.
So, I’m not strongly for or against. I’ll go to one if it sounds good, or if it’s cheap and if that matters at that moment lol.