I set this up for my convenience, since I often like to consume this media in contexts where I don't want to use mobile data, and because back when I set this up my internet speed was inconsistent enough to cause frequent buffering. However, I'm now realizing it has a lot of benefit in preventing me from ever seeing any of Youtube's "keep watching more things" UI, and it adds substantial latency and effort to any "impulse" watches, since the process is now: decide to watch: copy URL, paste into terminal command, wait up to 10s of minutes for download, go to videos folder, open video.
Crazy -- I have the exact same setup. Good to know other people out there have solved this issue in the same way. Having to watch things on actual youtube is such a terrible experience compared to the downloaded media.
And since I only watch selected channels, I will find a way to automatically fetch new videos from channels' RSS feed.