There is no lock in, there are merely incompatibilities. You can install sudo, but by default there is devel-su which is pretty much the same thing. You can install rpms and if you don't like pkcon you can install zypper as package manager. As long as you stay within the terminal emulator things tend to work.

There is a misunderstanding that desktop programs would be such a great boon for a mobile phone. But mobile phones suck with desktop UI. You need a mobile UI for it to make sense and that is exactly where incompatibilities are coming from.

I installed a community port of the qt6 based KDE plasma browser Angelfish for example and it is running just fine on Sailfish OS.

They just have their own format using their owm SailfishOS-specific UI libraries. Their apps don't work elsewhere without patching, there's no Flatpak and they only have SailfishOS apps in the repo.

Sure, you can write your own apps, but I prefer using what's already there.

"more urgent tasks"

Jolla could just mainline and open source and they'd get more developer power, the devs just prefer devices that are more open

Also, I'm mainlining stuff myself, without being a phone company. Surely they'd have a much easier time.

Replaceable Battery is just the legal minimum for the EU.

I prefer repairability, we've got too much trash already and the planet isn't in a good state.

You know just as well as me that a phone is daily drivable if it does what you need, which is highly subjective.

I personally have used phones that wouldn't work at all for most.

There are several options and people should look things up themselves and make sure the things that are important to them are supported.

I cannot give you an easy, simple, short answer in a single post, but we could discuss this in audio for many hours, easily. Sometimes simple answers do not work.

Not really, I am trying to find any sort of feedback about this phone. Might buy it and post a layman's review...