My personal option IMO it don't look like it but as long the EMT is properly bonded I don't see the issue however the set screw fitting I do not know if they will allow like that in that fashion as you show us the photo of that.

I am aware with the 3 inch termail adaptor is pretty big and it will not fit in the 2X4 standard wall cavity without leaving a budge or sticking it out a bit.

{ the modern North Americia 2X4 real size is 1.5 inch thick and 3.5 inch wide }

I Don't know what that person intend to do with that one but if it was me I will run PVC all the way up to the all in one box if the conduit is long enough.

Merci,Marc

Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)