People are human. But work is work. The canonical point of a workplace is to come together to fulfill the aims of the entrepreneurs. The personal aims of the workers are fulfilled best outside of work. Just stop to think about it logically for a minute... is the workplace the best place to circulate a petition condemning something that has nothing to do with work? The workplace necessarily is going to bring together…
The problem starts with the slogan "everything is political" which utterly fails to recognize the varying degree with which any activity relates to some political cause. Take Coinbase - their long-term project is to advance the use of cryptocurrencies which is deeply political. And you are welcome to work there if you support this project or engage in activism against it if you don't. This much makes sense. But why do Coinbase management has to issue a statement supporting BLM? What do they even have to do with police brutality? Of course there is a line of argument that they are (just as everybody) complicit in systemic racism so it is their responsibility but it never made much sense to me. Making everybody responsible for everything is not going to work.
In a sense this slogan is similar to "everything is connected", which is in some sense true, but if one takes it too seriously there is a risk of failing to recognize very real differences between things and boundaries between different subsystems which will lead to paralysis or suboptimal actions.