And unfortunately for them they can not get into good bitcoin paying bounties and even when They try out altcoin bounties there seems to be a dead valley and the little that are manageable act selective and increase there picking criteria.
Most spamming accounts obviously don't get into good paying bounty campaigns. But their main focus is mostly quantity > quality. They don't have the knowledge to rank up accounts? Simple. They farm a good number of accounts(probably >20?) and use those accounts to join campaigns. That way, their earnings
may come close to decent paying campaigns.