How has econ developed since Sonnenschein-Mantel-Debreu?

It seems that everyone, critic or mainstream econ or not ^{(this distinction might be a bit crude but regardless}), know about Sonnenschein-Mantel-Debreu. It sounds quite scary in terms of "everything goes" for the shape of the demand curve. How has the field responded to that in terms of how modelling is done or what not? Are there some things that we see (or not see) in papers nowadays thanks to this?