And yes, of course many African-Americans have certain cultural traits, some heritage etc. that sets them apart, but I would describe that as "African-American" and not "black" because I don't think that a Nigerian or a Sri Lankan would share those traits.
When Donald Trump insisted that Kamala Harris wasn't really black that just made no sense to me.
I am not an American, and I'm brown. I don't take issue if someone says I'm brown because I am brown! Maybe I cannot empathize with other races who've been extremely discriminated because of their skin color, but as you said, it is an attribute describing me, among hundred others. I also agree, color of skin by itself is not interesting at all, just like being blonde is not interesting at all - but may play into personal preferences, again, just like any of the hundreds of physical, personality attributes.
I just find the american casual racism, both sides of the political spectrum, very ... american :D
In France we sort of pretend to ignore there s skin color. I d never describe someone as black, or no more than I d describe someone as blonde and I would almost never use a French word to describe it. It makes me nervous to reduce someone to this random attribute, when maybe his family came from Mali, or Martinique or the US and that's so much more interesting than the effect of the sun on his skin.