I’m using Proton Pass aliases and they work like a charm. With the browser plugin, it’s easily feasible to generate one for every single thing you sign up for. I would argue that there are some advantages over DDG (although I haven’t used their service in for quite a while):
Proton applies E2EE to incoming mails
If the mails go to your Proton account anyway, removing DDG means removing a proxy that could read your mails or be an attack vector to do so
Afaik you can secure your proton account way beyond what DDG offers (password + 2FA + Sentinel + extra password for Mail + extra password for Pass) if you want to
Convenience: You can manage everything in Pass and it tells you right away what you created an alias for, allows to create accounts from it etc.
I’m using Proton Pass aliases and they work like a charm. With the browser plugin, it’s easily feasible to generate one for every single thing you sign up for. I would argue that there are some advantages over DDG (although I haven’t used their service in for quite a while):
Is it a total game changer? Probably not.