Update the warning on download page
https://www.torproject.org/download/download.html.en#warning
On c. it says:
The lack of plugins means that Youtube videos are blocked by default,
but Youtube does provide an experimental opt-in feature (enable it
here) that works for some videos.
But this is not the case anymore, Youtube automatically enables HTML5 on Tor Browser.
I also believe Whonix could be recommended on the section e. where VirtualBox is recommended but the given link for images doesn't include Whonix.