There's no accounting for life experience. He's 21 years old and really doesn't know any better. How many of us have realized, years later in life, how naive or immature our thinking was as some prior point in time. 10 years from now, he may revisit this and cringe. We can at least hope.
Its all fine and dandy to (expect to) have some followers. Last I looked, I had over 3K followers on Twitter; no one cares. Its what you can do with it, the visibility it offers, traffic it can drive, traffic that comes looking for...? Value. That's the key ingredient missing in his message. What value is he going to return, in exchange for the thousands he's seeking? Best I could tell: Nada.
We'd have forgiven a lot if he offered something of value. He didn't. He just 'wanted.'