>open up /bant/
>see this

What is going to be your course of action when you see this? How ever are you going to act when you open up your favorite board only to find garbage threads shitting up the catalog? Are you going to report it? Well, you could do that, but that wouldn't fix the problem, if anything the mods would just ban you for wasting their time. Are you going to call out OP for being an obnoxious faggot? That won't do much to remove the thread. Are you going to hide it? That might help, however it won't be very useful for when the next /pol/tard comes and posts it again. Are you going to highlight part of the post and add it to the filter list? That is probably your most viable solution, however what if the next time someone posts it they use different wording, are you going to repeat the filter process until you have filtered half the catalog?

Well, aside from killing yourself and a few other overly specific solutions, that's about everything.