It depends for everyone. But after moving to proton last year, I have no problem spending an evening moving all my services to mailbox.org. Because that means that at least I can give my money to one less company that treats their employees with such contempt.
You’re going to get spied on no matter how hard you try to hide.
The problem with proton is that their CEO is a complete ass. Personally, I wouldn’t feel good if I renewed my subscription in a couple of weeks.
For the future, it might be worth buying your own domain. Besides looking cool, switching providers is as simple as changing your MX records.