As annoying as it may be if someone self-moderates a thread you don't have to post in it and if you don't like their actions you are free to create your own thread in response. You can be banned from repeatedly posting in a self-modded thread when you have been asked not to so be careful with that.
While I don't like them, this is why I don't have a problem with them. I generally avoid any services that are posted in one of these threads but see no reason why they can't be used.