I don't think he use all those services. If you want storages with like > 1 TB you'll probably want to set up your own NAS and make back ups. Currently I use StartMail, 30GB storage and if you ask my personal list I should say use them for their disposable email service if that is what you're looking for. If you don't bother having disposable emails I suggest go for Tuta/StartMail. Tuta has a friendly userface and 500GB storage, while StartMail has less storage but more options.
And to repeatedly fail to update their github with the latest source code for their mobile apps, and to not have their apps on f-droid, and to not support notifications of any kind on a degoogled android OS, and to not support monero payments, and to add a Zoom button to everyone's calendar by default with no disclaimer about using Zoom, and to limit custom domain aliases.
The people concerned this much with privacy are certainly less than 2%. They're already in a niche market for the purpose of privacy. Not that much of a leap to support Linux (which by the way is likely higher than 2% of their user base.)