Man, it's so easy to use Proton anonymously, even without Monero. I seriously don't know why people give Proton such a hard time. Emails and VPNs are already inferior ways of performing secret communication. As someone who uses both ProtonMail and ProtonVPN, I accept all the blame for my poor secrecy. Personally, I don't think Proton is malicious. They strike me more as a bunch of losers offering mediocre services to other losers.