I agree with you on all your points. I just wanted to add that there’s openWRT, a linux distro for routers and embedded systems (never used it before and the router I use is not mine), maybe that can solve the router part, I may be wrong though.

that can also destroy it.

I did the same but was skeptical since Arch is an only systemd system so there’s no point it would affect Arch anyways

Not to mention drivers… many driver blobs are proprietary and if you can find an open source one, there is a chance it works partially or not at all. I have a spare phone and I’ve been hesitating between flashing either PostmarketOS (all FOSS drivers but without the android ecosystem) or LineageOS, or maybe both if I can achieve that.

That is the way! Excited to flash my phone to LineageOS. Thanks for sharing the apps !