I mean if I was dealing with two potential women that were pretty evenly matched, sure the one more prone to fellation might have a leg up...but honestly as long as there's an honest and earnest effort and desire to satisfy me in other ways, I have no problem if certain auxiliaries weren't available.
I once had a neighbor, whom due to past sexual assault couldn't have missionary sex at all. My wife questioned how her husband could deal with that, I told her that wouldn't be an issue for me and her husband probably has no issue with doggy, prone bone, cowgirl, and all the other fun positions you can do with PIV.
The point is, no BJs can be an opportunity to cultivate a HJ master, or maybe foot jobs if you're into it..
I think either gender should look at a lack of oral loving as an opportunity to find mutually enjoyable ways to reach the same goals, or possibly a way to allow for either to get their needs met within a modified construct of their relationship.
current GF doesn't give head, she has her reasons and I respect that so I can live without
interesting and insightful responses