Personally, as facepalms are really the only straightforward negative reactions, and are counted together with positive reactions on your profile, I personally try to avoid giving out facepalms. Feels like giving someone credit for missing the point....
And yes, I know this will probably get tons of negative reactions aka facepalms, but I don't give a damn, if you can't see that endlessly treading water is boring as fuck, you are a stupid moron and deserve no good games. In this vein, I will also not respond to any white-knight posts, you can love the game all you want, it doesn't change that there has been zero development for ages now.
Now, giving a facepalm for a really bad pun? That would be appropriate (I love puns).