It's just you. It is not too difficult to post. (No offence, I'm not trying to hurt anybody's feelings here... but) It seems to me the biggest problem with UI design is that users do not use the cues given to them. I'd bet that if you took some time to get used to the system and all it's little quirks, you'd find that it's not as confusing as you think it is.
Maybe it's just that getting into another's way of thinking about where the "post" button ought to requires a bit of effort, like when moving into a new apartment and figuring out which switches turn on which lights. It's not that the switches are on the ceiling out of reach, they are just not in the places where you expect them to be. It's not bad, it's just different. my $.02