At the end of the day, if he did cheat, so what?
The glove is on your hand. Each camp checked each others gloves, the ref checked each teams gloves.
If he did loosen his hand in the the glove then there's negatives and positives in the manner which is being hypothesised.
You might be able to punch a certain way with the extra reach, but you damn sure aren't getting full connection in each punch from an impact perspective.
I've had old timer trainers show me hand open techniques for amateur fights. You extend your hand out and get that extra 5 inch reach, in amateurs this can be a big deal, a score is a score.
In Pro's it isn't as necessary to be tagging like that for scores. If Fury did want to be getting an extended reach, perhaps it was a tactic to psychologically wear Wilder down with more punches and reach rather than big punches without reach.
If the plan was to use the palm area for impact, then it what it is. That's the sport, the glove is still on. I'm not saying i support it, but hey, everybody checked them.