I agree with you, the number of participants in the bounty has increased because the crypto space is getting bigger since bitcoin has reached 10k USD and many people are starting to talk about Bitcoin and crypto-currency in general. And the easiest way to earn money in crypto is to join a bounty campaign. I think the bonus campaign will be less rewarding because we have too many participants and the only way to avoid this problem is to join a non-hype bonus campaign.