If it helps young man no one has taken you seriously from the start or indeed actually cares about what you have to say.
Wrong. So far, Maul is one of the only people on here who I have seen say the things that should be said about a map. Bashing a map is different than pointing out its flaws, and if it has many, then that's the fault of the mapper and saying "this is wrong, and so is this, and this," is not bashing.
If he decides this map, for example, is okay but could use a lot of work, or thought that it sucked, I wouldn't have a problem with it, as long as he gave concrete reasons. If a map sucks for specific reasons, then it's a bad map. If the critique focuses on saying the map sucks but fails or contradicts itself at saying how or why, it's probably bashing.
I find that Maul is oftentimes saying what I'm not (I don't really post on here anyway). Many custom maps just fail in at least a couple of areas, but telling someone that it's good to protect their ego or be nice would hurt them more in the long run. If they decide to stop mapping because of poor reviews, well, that's too bad.