Nothing the judge said has been reported except for one partial sentence. He could have been taken out of context. He could have been misogynistic. We don't know.
Stop and think about this for a minute.
For example, we have thousands upon thousands of dementia sufferers in the country, many of whom are married. Do we think that carers should be assessing capacity to consent for each of them? Should the point at which a person loses capacity to consent be adjudicated in court every single time? Or do we think that in most, normal, non-abusive marriages, spouses don't force sex on incapacitated partners and the state should only intervene when there are specific safeguarding concerns?
I think we're running away with ourselves here.