My intuition tells me that the holding hands thing is an attempt to normalize "change from below," just as papal acceptance of female altar servers followed the institution of female altar servers in fact in various churches. I include parish "mission statements" in this category. The goal of the promoters of this stuff is the institution of female "priests." Look for them in the near future.
I believe I heard Fr. Groeschel comment on EWTN that holding hands during the Lord's Prayer is an offshoot of AA meetings. OR.....could the AA custom have started from Catholics who learned it in church? H'mmmm.......
Fr. Groeschel was not in favor of the practice in church, by the way.
For the time being, my husband and I continue to quietly hold hands, but no longer extend them to others unless they "insist."