Yes, but academic psychology can also coin terms that are a bit silly. There is a real distinction here, to be sure, and I'm glad that there are academics work

Yes, but academic psychology can also coin terms that are a bit silly. There is a real distinction here, to be sure, and I'm glad that there are academics working on it. But "entity theorist" vs. "incremental theorist" is bad terminology for the distinction. It's "entities" (i.e. people) that do the learning, after all, and learning isn't necessarily "incremental", especially not in the sense of regular increases along a scale of fixed units. Implying that people are "theorists" of these things, either by calling them so or turning the terms into -isms or -ists, is also misleading. What you really have are people with different kinds of mentalities or attitudes towards the relationship between ability and effort. If we need a new term, it could be based on that, such as "effort-oriented mentality" vs. "aptitude-oriented mentality" (or something like that).