WWW,
I'm not convinced either that it's a male thing, or that paying that type of instructor more would make any difference. Either way, the instructor has to be there, and instruct. As I pointed out earlier, it's really no easier to fly with Bloggs and wish you weren't there, than to actually teach him. In my experience, people who skive off do so however well they're paid. They always see their glass as half-empty, and will never be satisfied. Those who see the glass as half-full do their best regardless, and perceive instructing as a stepping stone to better things, and better than having to pay to fly. That doesn't mean they like the pay, or don't get pissed off now and then. One of those "half-empty" instructors, who I flew with and you knew, just about never had a positive word about anything. With hindsight, he was just a miserable git!
AFAIK he never got an airline job, but I bet if he had, he'd soon have been whinging about only being a FO, or the hours, or the routes, or the aircraft....or even the pay since others were on more!!! That's what he was like. Pity I didn't see it as a student before I flew rather too many hours with him.
I leave myself personally out of all of this. I have other work, that pays reasonably well. I instruct because I love it, because I can't afford to fly helicopters long term otherwise, and because it's a great part time job. I'm very lucky; I do realise that. But that doesn't mean I've been shutting my eyes for the last few years to what goes on with everyone else in the industry.