I wouldn't deny, and Coinbase didn't deny, that employees should be able to discuss decisions about wages, benefits, products, employment, etc. If you'd like to use the word "political" to refer to anything that affects society in any way, by all means go ahead, but you have to recognize that other people who say they're "apolitical" aren't using your definition. They just mean that they're not engaging in arguments like "we've gotta elect suchandsuch candidate!" or "we've gotta embrace suchandsuch slogan!"