Andy Yen, the CEO of Proton (Mail, Drive, VPN, Pass...) answered a lot of the questions you, the community, asked, in an interview that covers basically everything! He discusses security, privacy, the origins of Proton, how they operate, Linux support, future projects, products and features, quantum...
I reason it this way. If like they say in the video email is one of the most critical parts of privacy (I 100% agree with that) then why don't they support the only privacy currency? Also why pay for email well simple I both want the features that paying gives you but anything free either you are the product or others are indirectly paying for me. I want my email provider to not spy on me and sell my data so why not give my money to a provider that proves that they protect it? I chose Tuta.com instead of proton because of this. And to make it clear Tuta.com doesn't allow monero payments but their official reseller proxysto.re does allow monero! Also it's not hard to add monero as a payment option :)