I work at a phone repair shop (not Samsung certified), our suppliers sell us new genuine batteries. So maybe ask around at one near you. Or get one from ifixit, I replaced my Oneplus 6’s battery with their aftermarket one and it works great.
WebKit is only open source because they forked KHTML to create it, which is licenced under LGPL
I’ve used ncmpcpp and more recently Cantata to replace foobar, not as much customization but it gets a lot of stuff right for me.
Wouldn’t say it’s impossible. I’ve done it pretty often at work (tech support) and at home with sim eject tools, pointy tweezers, knitting needles etc. 5 minutes of patience and the port is like new. Just need to avoid the centre where the contacts are.
F-Droid probably won’t accept any builds with adware/tracking in them, so probably we’ll just stay on an old version until a fork or alternative comes along. There’s also a toggle on my preferred F-Droid manager app (droid-ify) to ignore new versions
We get OEM Samsung batteries. Not for Oneplus last time I checked. The more popular the brand the higher the likelihood for original parts.