I think anyone who says things like that shouldn't be taken seriously... Doesn't matter if they have the "blue verification" or not, it's not real... Maybe that is a new niche people have found to make profit, to sell verified accounts to scammers. But come on, it's very easy to avoid such scammers, just don't send money to them and you will be fine, ignore these offers or report to Twitter.
There are more sofisticated scams on the internet and about those you really need to take extra precautions.
Not everyone is able to see the obv scam.