> Why would I want to mess with using a web browser for video in my living room

No need for all that. Just use yt-dlp (https://github.com/yt-dlp/yt-dlp) to download them as video files, and then just play the video files as you would any other video file.

Just tested yt-dlp on s1e1 to verify it worked, and it worked perfectly to download the video.

[delayed]