Hex I'm sorry, I can imagine that this must be making you feel a bit beaten down and possibly a bit fearful for the future.
DH and I were discussing this yesterday as he was saying he was shocked by the amount of men in his workplace who share the views of your DH. DH was saying men like this probably aren't going to have their minds changed by women (as they clearly think so little of them), so there is a real duty on men who disagree with this verdict to speak out in an attempt to make these "hurrah justice has been served" men realise how wrong they are.
(By the way, as a feminist it pisses me off that DH is basically saying male opinions carry more weight than women, but with men like your DH they probably do unfortunately)
DH has just started a new job so the very last thing he wants to do is get into arguments with colleagues but being married to a rape survivor he can't listen to men basically condoning rape and not speak up. We were discussing how best to make these men realise. The fact that 1 in 4 women have been raped and the fact that these men like your DH presumably have female friends and relatives numbering more than 4, therefore the chances are they know rape survivors in their immediate circle (which fact alone seems to surprise them
) so they should be listening to what women are saying and take it on board. But even if they don't listen to women, men also think this was rape and DH was saying he would ask directly if these men would act exactly the same i.e. Enter a hotel room in the dark and put their dick inside a woman (that they have never met but know to be drunk) without speaking one word to her, rape have sex with her and then just leave without speaking another word to her. When asked this question bluntly and crudely they do seem to realise this isn't acceptable behaviour. Perhaps it's a question you could ask your DH, if you can bring yourself to discuss it with him again. Would he actually do the very same? If not, why not? If he would, well there you go. You know where you stand.
Depending on how you feel, you may well not even want to spend time and effort "educating" him, as the fact that he requires educating is a problem in itself. I can imagine if there are issues already in your relationship this may well feel like the final nail in the coffin.