Sirvoddmort:
It is sad that instead of changing their behavior to suit halacha (in this instance, a mefurash gezeira d’rabbonon,even apart from yichud)
“Mefurash gezeira d’rabbonon” is pushing it. The Gedolim of our time do not have the ?? of a Bes Din Hagodoil.
Its much easier to blame society ills on smartphones and easier to give mussar on them than do the same for molestation, abuse, Finances, Agunahs etc
Firstly, mixing secondary issues into an argument is paramount to announcing that you lost the argument, for it is an admission that you have nothing to say on the issue itself. (Think: “Well, my daddy is bigger than your daddy.”)
Secondly, there is a tremendous difference between the issues you mentioned, which effect ?????? in the Kehilla, and smartphones, which are a totally widespread problem that potentially affects every household.