VPN traffic is trivially blocked at the ISP level which has been proven by china, russia and others. So no you can't really prevent mass censorship with technology.
As is stated in the link I posted, you don't have to run your own bridge. With snowflake, there are more entry nodes than ever, and you don't need to know anything about them in advance.
Yes and it’s been classified and blocked before (though not for long). Eventually they will just start blocking fastly completely or whoever else will agree to domain front them and that’s that