I think that's a little unfair, speaking as a fedi admin.
There are certainly instances that like to block any instance that doesn't match its admins' precise ideological priors (i.e. "X on Y server of 10,000 people is a 'cop' through some loose definition... COP!!!! BAN!!! BAN THE WHOLE THING!!!!" - has literally happened). I don't agree with them or their methods.
But honestly they're relatively small and few, and safely ignorable by the people on the big instances, who by and large will only block places that simply won't moderate away their users' hate speech or harassment.
Same way how on Reddit you can easily go a million years without having to interact with the weird uber-tankies or the racists, you can quite easily join Mastodon.social or any other reasonably well-moderated instance and let the whole fediblock discourse just pass you by.