If it doesn't matter, why not let people choose whatever they like? Personally I'm also wondering if having specifically white and specifically black thumbs-ups does not introduce more racial bias rather than the generic yellow default that I was used to, but I did notice people of color using specific colors so perhaps it does matter, at least for some of them. The rest of us can just be on (the afaik neutral) yellow, presuming that makes everyone happy.

Technology is made for people. People are all sorts of shades. Other chat apps give people the ability to modify skintone on several emoji.

Good grief.