I've followed this particular youtuber/podcaster for a while now, and I generally trust most of what he puts out there (with appropriate grains of salt). I consider this to be an excellent lesson on the history of brain injury treatment and research, as well as an update and explanation/clarification of known CTE research data with regard to football players and combat veterans.
Fairly long: almost 38 minutes, but very much worth the listen, even if you only have a passing interest in the topic. (IMO)
(Mod Edit: Moved to the College Sports Forum.)