Knowing it's "roughly lunch time" on the other side of the globe doesn't mean much to me, knowing "I'm available from 22:00-1:00" or "let's try to arrive at 23:00" does. If I'm particularly interested in where the sun is there at that time that's when I should need to look it up, not every single time we try to reference times between 2 locations for the off chance I actually care about the sun's position.

I may have a bias here in that I already do meeting scheduling in UTC due to the geographic dispersion of the folks I work with and amount of cross tz travel we do (well, not as much of that as of late but hopefully soon again).