Furthermore, unless there's more context I've skimmed over (I assume you're referring to https://news.ycombinator.com/item?id=24636899), it's not clear that Coinbase will suffer any negative consequences from this whatsoever aside from being shunned by activists, which I presume is a consequence they're okay with since they published a blog post explicitly alienating that group. The only folks being forced I see are the employees being told to pipe down or ship out.
(also, while it may not be substantive to this discussion, the belief that neutrality, especially explicit neutrality, is tacit endorsement of the status quo is neither extreme nor unreasonable)
This is a direct example of what you are denying, that people are somehow not being forced to participate in these politics. They are, and increasingly so, with very few companies taking such an active stance to combat it.
And yes, neutrality is specifically the absence of any single position. It cannot be an endorsement of anything, be definition. Redefining terms to be whatever is politically convenient to create strawman positions and drama is another tactic used by those who want to force politics into every situation.
Source? I have no idea what this is referring to.
Effective neutrality due to lack of will or resources is one thing. But a declaration of neutrality is a message to other actors that you will not intervene in their affairs. It is a rejection of the cultural norm that extremism (outside the company) should be tempered. Sounds pretty political to me, but maybe you and I are working with different definitions of politics.