To answer the OP's original question : yes, perfectly reasonable IMO.
It is soul destroying when one partner is constantly rejected by the other and is made to feel that when sex is 'on offer', it is being done out of duty or under sufferance. No reasonable person would want to force their partner into a sexual encounter they clearly did not want and no reasonable person would make a unilateral decision to shut up shop and expect the other person to get over it.
It does sometimes seem as though some posters want to find fault with any man who posts here - no sex? well, clearly it is because the men are not doing enough housework/doing too much housework/not doing their fair share of childcare/doing too much childcare/too selfish in bed/too unselfish in bed. And the worst crime of all, posting about their problem on MN because their wife uses the site. Maybe, this OP has decided to post here in the hope that his DW WILL see it and realises how close to breaking point he is. She closes him down whenever he tries to talk about it - how else is he supposed to try to let her know how he feels and for them to try to come to a solution? Maybe the problem is not that his wife will recognise herself in the post, but that actually, a lot of women would so so!
If a woman posted to say that her husband refused to discuss a problem, she would be told he was being a controlling abuser. Any woman who posts about similar problems is told that it is her partner's duty to get to the doctor and sort out his sexual problem, when a man posts with the same problem, he is told it is his problem. Actually, it is their problem.
I feel great sadness for anyone in this position - I absolutely do not believe that anyone should feel they have to have sex when they do not want to, but I also do not believe it is reasonable to expect one partner to live an almost celibate lifestyle without any discussion or agreement on it. Many relationship problems can be sorted out with discussion and compromise, but sexual mismatches of this magnitude mean that there will always be resentment and sadness for both partners. One, because they are feeling frustrated and rejected and the other because they feel they are being violated. It is a problem that I do not see any way of resolving that is satisfactory for both parties.