Sorry for being unclear. I mean that we humans have a tendency to believe we can detect nuances in the world when it is in fact just a case of internal bias. I simply question whether most people can actually detect whether they relly need the best model for their task. But of course, everyone believes that they themselves have this ability even if people in general do not.
There's also the factor of habituation, the best model is the one we're used to, and most familiar with its quirks. Using a model only for unreal work won't result in really knowing how to work with it.