Protonmail here. I've pared down my use of centralised services now to about 4 or 5 maybe, and those are on the chopping block too. At some point only banks, kraken and things like DNS registries will be in my emails.

Email is so ancient, literally nearly 50 years old, but until there is an as universally used decentralised long form private messaging system it's gonna hang around like a bad smell.

BTW, it mentions "authoritarian governments" blocking access to protonmail. That list includes the Irish government!