I disagree as well.
Lots of rapists don't consider themselves rapists. Even their victims don't consider them rapists.
I remembered the other day, a man who I went to bed with years ago at a party who was impotent. He was a charming, nice man and I sort of fancied him and was drunk. Anyway, no sex happened because of his impotence and we went to sleep.
At 5 o clock I was rudely awakened by him fucking me. I couldn't move away from him and just had to wait until it was over.
I didn't think of him as a rapist for years - not until the other day in fact, when I realised that legally, technically, he is. I'm absolutely sure he doesn't think of himself as a rapist. After all, I didn't for twenty years and I'm his victim (hopefully the only one but who knows?)
He's not a sociopath or mentally ill or incapable - just a man who thought that his need to prove that he could fuck, was more important than my right not to be penetrated when I didn't want it. Also, crucially, he's a rapist who would never be convicted, because most people, men and women, think it's OK for him to penetrate a woman he's in bed with because six hour earlier she consented at that time for that occasion. That gives him carte blanche to penetrate that woman at any time.
Continuous consent is a really useful concept. It would mean that men like him, who don't think of themselves as rapists and probably seriously don't want to be rapists, would have a very solid concept which meant they couldn't lie to themselves.