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Proton Mail Discloses User Data Leading to Arrest in Spain
(restoreprivacy.com)
This is a most excellent place for technology news and articles.
I don't believe you need that field with Proton, correct me if I'm wrong. If you do need that field with an email provider, and you need complete opsec, use a different provider.
It wasn't a requirement when I signed up several years ago, and to my knowledge, it's still not required now. Just as long as you keep your email and password in something like a password manager and don't fuck it up, you're fine.
Its not