I thought I was cool because I recorded the ring from my flip phone and used it on every subsequent phone until I somehow lost the recording around the late aughts, but that beats me by miles.
oh I wouldn't say I'm "adamant" - but to answer your question I was looking to unGoogle my Google Drive and GMail, and Proton popped up pretty quick for having both.
I'm currently paying for Private Internet Access VPN, but once that expires I could also get a 3rd function out of Proton with their VPN.
I also want my new mail service to allow custom domains, which Proton also does.
Yeah drive is a pretty good feature. Do be warned though, proton's overall Linux support is bad, including the VPN and drive. $8 for unlimited (which comes with everything you mentioned) a month is a little steep, but if you'll use the VPN and the email it's definitely worth it. Enjoy man.
I also use Windows. I get the attraction of Linux, I use it for my selfhosting, but I absolutely hate it for day-to-day operations or work. So, don't feel too bad about it, people love shoving shit down others throats.