That's basically what happened a couple months ago to my youtube account of several years. Didn't have any videos on it, but I used it primarily for voting and commenting, so most likely some wokerati reported a non-gender inclusive opinion of mine and it subsequently got banned. Bad day, as I had several hundreds of favorited videos on it in many different playlists and thought I'd lost it forever.

I appealed the ban, though, with a very general but confident statement that I didn't break any community guidelines(they didn't even say what I said that was so wrong) and crossed my fingers. Fortunately, there was still some sane people working there, as I got the account back.

Now I don't really take any chances with online lists kept on websites. They can stop you from accessing them at anytime for any reason. I just keep local browser bookmarks of the videos in a tree of nested folders accessible on my bookmarks bar. The bookmarks have the links of the pages and the names of those pages when they were bookmarked, and I can export and then back up those browser bookmarks anywhere.