Yeah — this is largely the dominant evolution of 419 fraud isn't it? Rarely very bespoke scams.
I think you could more or less instaban users who mention Telegram and nothing of value would be lost.
I see comment likes and replies from users called "Congratulations you've won…" or "Message me to win your prize" and if you report those, they are actually pretty much always removed (easy pattern I guess).
But nobody seems to have any luck with reporting fake celebrity scams, to the point that if you are a well-known user who has more comments than you can reply to, you more or less have to regularly post a video saying "I will never message you directly".