.bak gang rise up.
IlliteratiDomine
The difference, as I understand it, is Beeper hasn't claimed to not be doing that. Sunbird/Nothing touted E2EE and that was a lie.
You've got it all backwards. Einstein's corpse is now energy and fast AF.
That tends to be how things develop when you're talking about systems. There's not a cackling Bad Guy engineering these things, but a system of socioeconomic carrots and sticks that, right now, favor exploitation. Schools and education happen within that incentive structure so its natural that they would take on it's characteristics.
Often, if an rss link isn't on the page, there's still a feed available. /rss and /feed are the most common places to find it.
I'd be interested in utilization data before and after that change. Anecdotally, I use Signal much less after SMS was removed. With one app, I could opportunistically use Signal, when the other person had it, and send an SMS otherwise. Now I have to decide what kind of message to send before opening an app and learning my options. Most of those quick messages have moved back to SMS for me.
I made that move and had no issues. You can copy/paste your way through DNS setup and the rest is just configuring your proton account how you want.
You'll want to be familiar with proton and some of the tradeoffs in its privacy model, but it's most likely more feature-full than a hosting provider. Dreamhost, for one, is quite basic.
Most self-hosters are probably using dns services through their registrar, but you don't have to. A registrar with poor api support might still be a good choice, if that was the only negative.
There are many ways to setups full disk encryption on Linux, but the most common all involve LUKS. Providing a password at mount (during boot, for a root partition or perhaps later for a "data" volume) is a but more secure and more frequently done, but you can also use things like smart cards (like a Yubikey) or a keyfile (basically a file as the password rather than typed in) to decrypt.
So, to actually answer your question, if you dont want to type passwords and are okay with the security implementations of storing the key with/near the system, putting a keyfile on removable storage that normally stays plugged in but can be removed to secure your disks is a common compromise. Here's an approachable article about it.
Search terms: "luks", " keyfile", "evil maid"