Since I'm going to switch to Linux Mobile soon after Android gets locked down, I was also considering getting involved in developing software for it since I imagine one major problem is the lack of support. However, I'm not sure which distro to daily drive or develop for, so I was curious what the community thinks.
Honest opinion for developers; use Qt's QML, ts highly portable, it can run in any Linux mobile base (Ubuntu Touch, SailfishOS, and KDE use it as the UI library), best example is Amazfish, and Quickddit, you can also use any language you want, although if you want to be minimal, QML allows in-file JavaScript, but there are plenty of bindings for Qt. And Qt apps still work in Phosh/Gnome.
LibAdwaita will require you to either get distrobox or similar, and will still need GTK packages, which some options (notably SailfishOS) won't do
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