That's the giant strawman if there ever was one.
"Abortion is about a woman's right to chose, who's against that?"
"Abortion is about killing children, who supports killing children?"
Everyone generally supports equality, and something like 95% of Americans including huge majorities of Republicans etc. accept that racism exists and is a problem.
Almost universally Americans want 'equal pay for equal work'.
... the question is the means, the underlying issues, social conditions, solutions, lack of recognition for other groups, the 'racial lens' that we now seem to use for everything, the double-edges sword of affirmative action, double-standards and of course accepting bad behaviour as part of the cause (i.e. riots) etc..
It's not remotely so simple, unfortunately.
These narratives that fuel the culture war “decide” that certain groups are in or out. It’s entirely inaccurate but that’s what the popular narrative dictates.
BLM is, under this system, on the “left” side, along with other made-up narrative entities in this fictional drama such as “antifa”. To the culture war brawlers, entirely disconnected from the actual happenings, they alias to the same thing, the same people, the same group.
Coinbase has leveraged that system to cover for the fact that their silence on the matter of justice and human rights is extremely loud.