sorry for the premature crop.
I haven't heard that shluchim necessarily rely on THIS particular psak, but it is nice to see. Maybe this will help shluchim in their hasbarah... I don't see Reb Dovid Kviat as having any particular agenda neither. His Slonimer background and Mirrer education doesn't make for him to want to allow this. But he's quoting RMF. And the vort sounds almost Chassidish; ניצוץ של קדושה - נקודה פנימית, good stuff!
Source: א גישמאקע ווארט