In my opinion, the sentences are not contradictory. Part of having good communication is knowing what to say, who to say it to, and when and how. Sorting through thoughts is not something that has to be done out loud, in real time with a partner. It's often good to think through what you want to say before you say it. This forum gives amk an outlet for doing so, and his wife is aware of this and accepts it.
Amk's wife has many other resources available to her for sorting this out, and she may not feel the loss of this one (not to say there isn't helpful advice here). If amk's wife really wanted to be here and he tried to restrict her, that would be one thing, but for all we know his wife has no desire to read here.
My husband and I don't read each other's emails or listen in on one another's phone conversations. Is it because we have communication issues or because we hide things from one another? No. We just both feel entitled to some measure of privacy.