You, and I, and millions of others. Yet another example of how this shooter was stuck in some serious online bubbles. If there was even a vaguely contrarian voice, they would have mentioned his entire idea would, and has, turned a guy most people have never even heard of into a vastly more well known martyr.
Anyhow, the post that was "giving context" linked the actual video that likely got Kimmel canned second. Here it is timestamped to the section: https://youtu.be/-j3YdxNSzTk?t=122