No matter who you are or how smart you are as a bounty hunter, there will come few times when you will choose or promote the wrong projects that won't earn you any penny, escrow can't fixed this, crap tokens will still come around
At least the escrow provides certainty to the hunters that the reward token has been held by the bounty manager. Regardless of whether the price fell when listing, I think it's a different matter. There are many campaigns that process payments to old hunters, even the projects die and in my opinion escrow provides comfort to hunters to promote the new project.
I participated in many campaigns use escrow, at the end of the campaign I still received those tokens. But they are never listed on exchanges, and I only get these useless tokens. What we need to hope for is their project to be successful and listed on exchanges