Apparently scammers can upload the video and have enough time to run the scam for it to be a profitable endeavor.
YouTube is trying to curb crypto content, but it is targeted mostly to a very small group or newly emerging crypto channels. As many famous peoples on YouTube often take intrest or talk about cryptos due to it's increasing awareness around. According to a recent incident they had to unban some accounts which were banned for crypto graphic contents as it included some of the celebrity personalities which posted there view's and loosing of trust on twitter due to there account getting banned. But YouTube is surely against it.
Anyways, even I experience those bots poping up with that spammy content on telegram often. It's really irritating for an group manager to delete and block the accounts every time.