Perhaps they want to limit their corporate position on political issues to the ones directly relevant to them, so as to not repel people who disagree on an unrelated issue.
They walk a very fine line. It seems like a difficult balancing act of compliance with regulators while appealing to users who expect hyper inflation and envision a libertarian utopian future.
Their original memo (https://blog.coinbase.com/coinbase-is-a-mission-focused-comp...) puts it this way:
> We don’t engage here when issues are unrelated to our core mission