Well if we want to stick to specific words then somebody who doesn't care wouldn't want that number to be high or low. But I understand your point, I guess just like anybody else here. But your conclusion "we clearly prefer holding on to the ball at times" well, I don't see that "clearly".
What I see are teams that setup defensively, relatively deep, compact against us. They let us have the ball on the wings, but they make sure, that the center is well protected against Pogba and Bruno. Offensively teams try to attack us very fast and direct with counters. Teams know, that we aren't really good with creating chances, we often rely on moments so the odds are decently enough for that way of defending. As seen with Adama and ASM we struggle against counters (who doesn't) but our tendency to lose organisation and individual mistakes gives most teams an option to try to score. To me that seems to be a pretty solid gameplan wouldn't you agree? I mean, of course teams know with our players there are never guarantees but still - that way seems the most promising.
I don't want to argue just for the sake of arguing, but I want to make sure my point is clear: what is more likely - that teams decide for the gameplan above or that we suddenly became better possession wise and tried harder to hold on to it? There isn't one definitive answer, but to me the odds are pretty clear.