well so far, some bounties may not be very profitable, this might be influenced by the ICO scam, or the crypto prices are down. however, at the moment, it seems that some bounties have improved, and I think it has started to pay, even though it's not as much as the previous year.
Things will only improve if the bounty managers are able to weed out the scammers. There are users out there who will enroll for social media bounties using dozens of alt-accounts and facebook or twitter profiles purchased from the net. In the end, it is the ordinary bounty hunters who suffer as a result of this in the form of low payments.