A twitter-like service whose only ban-able TOS violation (besides obviously illegal stuff) is to post any political content... that sounds amazing! I’d be there in a heartbeat.
The thing is, everything is political. Take LGBT people, especially trans people. Their entire right to existence is a hotly debated topic. Same for abortions. Religions. Sport events. Porn preferences. Sex work. Even such utterly mundane things as lipstick.
Take that out and you'd be left with essentially a feed of cute animals and still get fights between people arguing if dogs or cats are cuter.
That's true, but even more so than your list suggests. It's not just socio-cultural controversies that are political, but even basic elements of the economic status quo. Why do I have health insurance but not my Uber driver? Is my labor worth more than his? Is it OK that Pat Bowlen owns the Denver Broncos, or should the city of Denver own it instead (a la the Green Bay Packers)?
Take that out and you'd be left with essentially a feed of cute animals and still get fights between people arguing if dogs or cats are cuter.