It is worth in 2020, but for your main job and main income is not recommended to do at all. For every project they just give you below 100 bucks for every 3 months. This is really low compared to fixed jobs and in 2017 - 2018 it was really better and you could get more with just doing a single project, the difference is really insane.
From the years 2017 - 2018 were very good for bounties and airdrops, but not in 2019 many bounties did not pay, but now it's getting better, many bounties are paying. we have to be really good at analyzing.
Indeed, but it does make sense tho why the projects are slowly died and only few of them could survive. It's either they are tired of the projects that is not worth to actually manage because of lack of investment and minimal support, also because the investor itself is really tired of getting scammed. There are lot of reasons why the IEO investment is near to death.