It's a useful aggregator to be sure. Unfortunately, it doesn't solve censorship.
Example:
I was trying to research the current events in Kenosha. Naturally, there's a 'diverse' set of views on the subject matter, so I tried to just watch the videos of what happened and judge for myself. When I tried to send what I found to someone else, some of the videos magically disappeared. Of course, the (very) edited versions of those videos with commentary added on top are still available.
You should set up youtube-dl on your machine so you can at least download the videos before they disappear. This tool can handle hundreds of websites and has come in handy so many times. One of the many projects I started and never finished was an auto Youtube downloader that you automatically detect when I watch a new Youtube video and archive it to a local NAS. I got tired of going back to an old bookmarked video only to find that it has been deleted either by the author or due to a copyright claim.
Something similar would happen years ago if you posted something from Wikileaks to Facebook (long before Wikileaks lost its reputation). You'd get a mysterious error after a delay, when any other site would post fine. I think HN does the same thing for different reasons -- mysterious error for suspected spam from new users or something like that.
