Here's how I see it. You may deliver me the dunce cap once again, if you like.
My body type best utilizes and therefore craves protein. Although I enjoy salads and vegetables, too, I would gladly eat meat/chicken/fish every meal for 9 out of every 10 days. When I do eat salads for a main course, I get full, but not satisfied, unless I've been getting plenty of protein. Understand, I'm not talking about my personal preference. I'm talking about what my body craves.
My W, though, eats exotic salads at every opportunity. She will occasionally add a chicken breast to it, but it's the unusual greens and "extras" (walnuts, mandarin oranges, blue cheese, etc.) that she delights in. She would go months without a meat-as-a-main-course meal.
If the HD is the "meat-eater" and the LD is the "salad type", reality dictates an acceptance of the differences. I can make all the arguments for how much better a "high-protein" diet would be for my W. (She'd lose the weight she says she wants to lose. She'd be healthier and feel better. And we could stop arguing about where to eat.) I can easily imagine that she could develop a preference for meat, if she'd only give it a chance for a prolonged period. But the fact is, there's something about the way she's made that causes her to want salads, and she'll never want meat like I do (or more than salad).
I first saw this analogy reading one of Corri's posts. IMO, she "gets off" a lot more by discussing chaos theory with a stranger than having sex w/her H, though I can't see her admitting it. She can't/won't go for sex w/o her H saying he wants to be close to her. That says to me that she enjoys/craves intellectual and emotional stimulation more than sexual stimulation. Mr.Corri wants them to enjoy steak together, but she wants salad, and if it's a good enough salad, she'll put some steak on it, too.
Your H has confessed to being a "salad eater". He's had a lot of meat lately, at your insistance, and has enjoyed it. But along with enjoying the experience, he's become aware that you "eat meat" naturally while he has to work at it. He has been criticized in his past for being a salad type. He probably feels insecure because the conventional thinking is "Real men eat meat!" Obviously, he knows you want him to.
BTW, salad types don't think in terms of, "I'd like to have a steak, but she doesn't cook a good one." They think, "It's time to eat. Where can I get a good salad?" Meat eaters, OTOH, think, "A bad steak is most often better than a good salad."
I think you have to decide if you require a H that's a meat-eater or if you'll be OK with a salad type who's willing to have 3-4 "meat meals" per week. He's certainly shown a willingness to "eat meat" w/you of late, and he's told you that he'll never turn down a "blowfish" appetizer from you.