I always wonder if these kinds of changes in taste - especially bitter can at least in some instances be tied to soil depletion and the corresponding nutritional decline of crops.
I hope it's "just" breeding that took most of the bitterness out of brussels sprouts, grapefruit and the likes (I personally also do enjoy a stronger bitter taste now and then).
https://www.scientificamerican.com/article/soil-depletion-an...