Of course. It's condescending to think otherwise, you can't pretend youtube or twitter doesn't exist (especially with a substantial portion who use VPN to evade censorship anyways), it's just accepted as a fact of life.
Really? China's a huge country with huge differences in income and education. I wouldn't be surprised at all if there are some people who aren't aware of the censorship or others even outside of the government that feel like it's a good policy. Mainly curious how small that population is.