Curious why you say the YouTube posting is "semi-legal"? It's 100% a copyright violation that the studio could contest and it would be taken down, not just de-monetized. It might be whack-a-mole if other accounts then try to post it, but it's not a fair use case. My guess is that rights holders for old series like this just aren't paying attention to YouTube, so if bots don't catch them upon upload, they just sit there like this - and 3.6k views in 9 years for the pilot is pretty much nothing.
Curious why you say the YouTube posting is "semi-legal"? It's 100% a copyright violation that the studio could contest and it would be taken down, not just de-monetized. It might be whack-a-mole if other accounts then try to post it, but it's not a fair use case. My guess is that rights holders for old series like this just aren't paying attention to YouTube, so if bots don't catch them upon upload, they just sit there like this - and 3.6k views in 9 years for the pilot is pretty much nothing.