Maybe someone can do some experience like, get some random image, marge them together and post on the bounty (altcoin) section. You will definitely see some of those proof of participation or something with their wallet details LOL
That's something I would like to see: some nice bullshit image, standard text with applications forms etc and then at the bottom of the post "This is fake bounty campaign, do not enter" written in big red letters. I can assure you that dozens (if not hundreds) of lemmings would apply anyway. 
Yeah! Mindless automatons.
I have a feeling that majority of these bounty hunters operate with law of large numbers in their mind, hoping that if they apply to every possible bounty campaign, few of them have to bring them some profit and that's why they usuauly don't mind about escrowed funds, does altcoin project they promote makes any sense etc. And its be realistic, its not like they put any real effort into this (at least not those that do social media part of bounty campaign).
That is true. But I have a feeling that the majority of projects that organize these bounty campaigns are actually banking on that law of large numbers mentality. They do not care about quality; they only go after quantity. They do not care about low-effort tasks because they are throwing away a bunch of worthless tokens anyway. So, it is a bit of a numbers game for both sides.