I'm not generally in favor of speech-limiting legislation to protect the powerful from the people but if it results in comments getting turned off on Youtube, well, every cloud has a silver lining. Who do I have to donate to to get stupidly overreaching and almost certainly unconstitutional legislation passed in the US?
I think the joke is that suppressive, unconstitutional legislation is acceptable if a side effect is that people can't comment on YouTube -- a site which is notorious for its low signal to noise ratio.
The state of many nations (China, North Korea) is quite scary. Anonymity is a requirement if the people are to be given free speech (without fear of their government -- although people should never fear their government).