Paying out, and making good money are two different things and I believe the difference is huge. Think about it this way, if we are talking about paying out, I could get 1 billion shrute bucks, if it worths zero then it will worth zero. This is why I believe that getting paid in the bounty or airdrop world means nothing. It means that you are doing absolutely the bare minimum by buying people to promote you and if projects do not do even that much, then its definitely sick and lazy scamming. Because of this, "does it worth it? is the real question, because it doesn't matter how much you get paid in tokens, but the value of it in dollars, if it worths it then it worths it.
Even in that case, people are so sick and tired of not getting paid after working hard that, even getting paid is a big deal for most cases. Even if you worked a lot for it, and made only 20 bucks, if ALL of them paid out, that would mean that you could find dozens of airdrops and bounties per month, maybe even 100 of them, that would make a huge huge income for people, you wouldn't need a salary at that point and could make a great return very easily.
This is why people are focusing on getting paid, and yes it is disgusting that some projects do not pay but that is the majority, they realize they didn't get enough attention and stop.