If you believe Proton and Bitcoin will give you privacy you've still a lot to learn. Marginally better yes. But that's not nearly enough for those who seek real privacy.
For that you need your self hosted infrastructure on bare metal and Monero.
Discussion
For a mainstream company, they do amazing work.
I use a self hosted node to purchase Proton services using bitcoin I mined myself.
Not mining your own corn? Send KYC coins as eCash through two anonymous Cashu wallets before sending to Proton. You'll get the same privacy as Monero, if not better.
Cashu reveals the payment amounts to the mint and at least partial amounts to LN nodes on the route. Monero doesn't have mints to reveal anything to and it doesn't reveal payment amounts to any nodes on the network.