Andy Yen's values are incompatible with Proton's mission. He advocates for poor security practices, supports fascists, and he verbally abuses his subordinates. As such, I can no longer in good conscience continue to financially support a company with such terrible leadership.
Unfortunately for me, my subscription just renewed last month on a multi year plan, but it does give me time to browse for and experiment with alternatives.
If you're able, I encourage you to do the same and cite Andy Yen as the driving factor for your decision. We can't let these tech bro fascists destroy what little semblance of privacy we have left.
Since nobody mentioned it here yet, Mozilla has a similar service called Firefox Relay and it's super straightforward and a joy to use. I used it to create an alias for every service (some 400+) that has my email address and now I can just block emails going to any alias of a compromised account and set up a new one.