While Bounty brings creators to ICO, good results in popularizing their token, of course they will exist. The problem is that every month more and more people take part in them and all receive less rewards than before.
I think it is not a big problem, the biggest one is that there are more and more scammers and account sellers, for example me or other hunter is doing posts ( valuable and instructive ) but will never get merits to grow up but someone is buying them... This is a problem that someone is working hard to get paid but other one is spamming and get also the same reward! But bounty will stay till companies will find other way to develop their projects