The fact is that fructose malabsorption issues are still not well understood, and their connection to the increased intestinal permeability brought on by damage due to gluten in undiagnosed celiacs has never been a direct subject of scientific research. I do wish they'd get in the ball with it, honestly. Until then we celiacs with odd problems like this are left to look to each other for hunches and advice yo go to our doctors with.
I'm taking my hunches to the Mayo Clinic next month for testing, and have sent away for genetic testing as well to look for other possible causes, since what I have is unusually severe (though two others here have told me they had the same going gluten-free). But I wouldn't have known where to start without folks here passing along their ideas and experiences.
All of which is to say, yes, I totally agree with you.