The one time I complained (letter to airport director about harassment secondary, forwarded to regional TSA) I received such an aggressive and accusatory letter from TSA in return, I won't do that again.

That said I have been lucky lately with the SDOOs. It's been weeks since my last patdown. And when SDOO is possible I see longer lines at the WTMDs than at the NoS, suggesting to me that more people are consciously choosing to avoid the latter when able.