So after having a private conversation with Nanto on here (and it certainly felt nice catching up with him after so long), it turns out his channels actually were hacked by someone from Spain and turned them into sports channels. What a shame.
I noticed that, too. His channel name was changed to 'SP GOALS' (or so I think). In any case, I remember him as being one of the most 'regularly reliable' (or, if you will, 'reliably regular') uploaders of vintage Sesame Street and TEC videos.
Sharing this with the community on how Sesame Workshop should start using Hybrid (the video converter like the paid Wondershare Uniconverter) to deinterlace their old material with an upscaled HD resolution if they want high quality 60fps output without visible field bobbing on both the source file on media player and their YouTube channel, especially episodes as well: