This is suprisingly level headed. But the problem goes away the moment social media giants go away. The problem with the internet are the monopolies. Once you don’t have monopolies the free market can function. Censorship ceases to be a problem when a single platform doesn’t dominate the conversation.
The KISS principle: https://en.m.wikipedia.org/wiki/KISS_principle
Some programs I know:
https://github.com/linuxmint/warpinator
https://f-droid.org/packages/me.zhanghai.android.files/ This one is a file explorer with FTP server support.
newpipe for android and firefox+ublockorigin for the desktop.
Youtube without these is unusable.
yes you now can: https://itsfoss.com/fairphone-with-e-os/
Android is not really FOSS though. Google took the Linux kernel and a few other things to give themselves a headstart, and then built a closed source userspace on top of it.