I think the issue here is that most normies think of economics as macro (unemployment, inflation, growth, etc.) when the large majority of economists are applied microeconomists. While micro is ideological too (the questions asked and not asked, the interventions tested, etc.)
Can you tell me where in my reseach or anywhere else in my work I have used a DGSE model?
More generally, what motivates you to make such a broad statement about our entire discipline?
For some reason, I quite often see similar statements by persons who call themselves "heterodox". Strong assertions about what we mainstream economists supposedly do that are completely at odds with the reality of mainstream econ research I see every day.
This leads me to lose confidence in other statements by that person. It raises doubts about whether the person cares about getting the facts right when making any assertion.