>>4Then don't bother posting.
A thread's built for discussion and opinions on a subject.
Someone saying that they don't care about a topic contributes nothing, and only lets people in the thread know just what they can see:
A poster who cares about a topic enough to post just how much they don't care about it.
If that's not ironic, I'm not sure what is.
If any one poster managed to go through all the threads and posted: "I don't really care about this" on every thread they saw, imagine how little conversation would actually happen.
(Yes, that's an exaggeration)
Simply skip over it and look for more interesting topics to discuss.