I'm not sure this is correct, but I'm willing to be convinced if you can expand a little more. I guess I see it as censoring the act of censoring.
> If this is true, i.e. reporting of the censorship increases the visibility of the bad idea, then it completely destroys the pro-censorship argument that it reduces the visibility of bad ideas. It would also immediately cease to be true if censorship ever became uncontroversial, in which case you couldn't claim that it's giving the allegedly bad idea a chance at a fair debate.
In this case, it is true. But youtube censorship is not equivalent to societal censorship, it just signals that youtube does not endorse Icke's ideas and does not wish to publish them, but people can still evaluate them somewhere else.
> Is somebody suggesting that YouTube should be prohibited from creating and distributing their own videos?
No, the suggestion is they should not be allowed to write their own terms and enforce them.