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.
I have yet to delete my gmail account but I soon will make a new one to run on my phone until I can get a new phone with grapheneos or some other OS that uses microg instead. I feel you on that 20 year account thing though. I think I made mine about 20 years ago as well. It was my very first "grown up" email after my silly kid named ones like Skaterpunkxxxxx@aol and such.