Tl;Dr: Lmao yes and no.
The idea is that every video gets a trackable number so the leaker can get identified and banned later. You can just use AI or proficiency in video editing to scrub that now so it's better to hide identifiable points of origin in the metadata since everyone forgets that exists and never bothers to delete it. However, people are lazy or maybe they don't care to resub or whatever, so in closing it's kind of effective but imo a nothing burger.