I don't know about "practically harmless for youth and young adults" - but as they say, I believe in your right to express your opinion.
Seeing the downvotes, I suppose the majority here disagree with the statement. But at least the comment is still readable/visible. I think it's healthier for public discourse to have differing sides and points of view expressed, to argue in a good sense of the term, by logic and evidence, to hopefully arrive at some common understanding.
"Fact checking" and judgements of "misinformation" are necessary, I can see, but a question remains - who checks the fact-checkers, and judges the censors?
I don't trust Google to be a neutral party in such decisions - maybe in this particular case they're right, but we shouldn't depend on a for-profit corporation to be a trustworthy judge of anything in general.
Do they have the right to ban whatever they see unfit on their platforms? Yes, I think so.