I didn't really want to man bash, but I did find it funny that the researchers were saying they couldn't find any reason for it. TBF, I guess they mean any reason in terms of qualitative research, but on another level it was one of those 'Duh, you could ask a woman' things.
But yes, I think it is because (even if unconsciously) men are happier to sit back and have stuff done for them, and women are more likely to accept what will come with living away from home - still. We've not done as well as I'd like with 'gender equitable parenting' but DH does at least 100% more domestically than my dad ever did and the kids have grown up seeing that. I need to chivvy both of mine (teens) to do more around the house, but neither is undomesticated.
I think there could also be a degree of a sadder explanation that maybe young men are less likely to have close friends they'd like to move out with, or to be less confident about getting on with previously unknown people than women?