There is something really melancholy about abandoned youtube accounts, like abandoned accounts in general are a bit sad, but Youtube channels in general are extra sad.
The largest Vtuber is about to retire her current persona and leave her company. and her account with 4.5 Million subscribers is just going to be abandoned, all the videos will stay, but they will just be there, in the void, for as long as these servers remain. I think the comments are going to be disabled too, but the live chats will remain.
That melancholy is also why I think Unnus Annus was so effective as well.
Outside of like these big name examples, even something like, someone who just stops posting videos because they lost the drive to do more, or just switching accounts but keeping the old ones and abandoning it, I all find kinda sad