Earlier quoted context omitted.
Personally I think if he did that people wouldn't pay attention. My experience is that when you complain to people about digital rights they just glaze over unless you walk them through all the ins and outs and the implications.
I share his videos here but nobody seems to see them and/or care enough to vote; all I get is crickets. It's baffling to me. Examples: - https://news.ycombinator.com/item?id=48802162 - https://news.ycombinator.com/item?id=48395520 - https://news.ycombinator.com/item?id=47043208
I watch his videos, but not from links here and that is probably what you are seeing: those of us who might follow your link have already seen the video (likely via grayjay rather than youtube) and will skip over it to the next interesting new thing. People who don't already watch him will see “[video] (youtube.com), 1 point, discuss” and think “oh, another video that could be a few paragraphs of text which would be much faster to read than watch, that so far no one else has seen as worth interacting with, preceded by two unskippable adverts”.
A link to youtube is only going to get much attention if it is lucky to have a title that jumps out to a few people so it gains the first few votes and/or comments that get the ball rolling. Even then Louis' videos aren't going to get a hot debate going: most people either entirely agree so don't see the point commenting further, or they aren't the sort of people who are reading HN at all or are but don't follow video links.