I do both and I still not rich 
. With the current market, you can not get rich with the bonus campaign.
Airdrops and bounties were changed right now. Because now those campaigns are famous. Each campaign gets a large number of participants and allocation is not enough. There are so many scam campaigns too. Then we have to do our own research and work hard to get some good rewards. . With the current market, you can not get rich with the bonus campaign.