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Asking people to click 3 times more to show the content is "a bit like" censorship.

Not even close.

Censorship:
"You can't read this." Content is actually blocked and actively removed.

Not censorship:
"The general community has flagged this post as objectionable. Do you want to continue?"
"This user has a low reputation. Do you want to see the content anyway?"

That would be an informed audience and public information, not censorship.