for youtube you can remove everything starting from the first &. it just needs the v=zBGlI4DKlL4 parameter

yeah, people that design platforms that way deserve extra hell

imho if they actually delete your info afterwards, this is actually useful. (currently deleting a lot of accounts; opened a support ticket on one site that said that i want to delete my account; after a while without response, the login didn’t work anymore so i assume they just deleted the account without confirming it to me (like, i guess that is exactly what i asked for but i’d rather get a quick email so that i can mark it as deleted in my password manager than having to check if the login still works))