Like, downloading the video files with yt-dlp and then uploading them? Or streaming, like what Piped/LibreTube do?
I personally have my own piped server, and don’t enter to youtube for anything. The only 2 things it can’t do are post comments and see live streams comments. No ads, no tracking, i can do whatever i want without google’s permission
That’s why I host all my shitty unfinished projects in a Gitea instance in my VPS. Now they actively cost me money and I feel (a tiny bit) more incentivized to do so something with them!