Let me explain you something very shortly stupid noob.
1. Are millions of ICO investors paid by BTC or USD ? - No, they are paid by ICO tokens.
2. Are hundreds of thousands ICO bounty campaigns participants paid by BTC or USD ? - No, they are paid by ICO tokens.
3. Are bounty campaigns and community managers paid by BTC or USD ? - No, they are paid by ICO tokens.
3. Are any service providers on bitcointalk paid by BTC or USD ? - No, mostly they are paid by tokens or coins.
Why all that people are accepting tokens ? - Because later, they can sell them much more expensive on exchanges.
But the F@cking noob and idiot like you will never understand that, because for your simpleminded personality all this is too complicated!