The first time the new Saturday and Monday rules for Holy Days came to my attention was in Milwaukee in August 1992. I called the chancery there and said it was a bad idea and I still think it was. Years ago people basically did go but now they miss, most if not all holy days and don't remember that in the USA 12/8 is always a holy day.
For years I have noticed that the parochial kids are there for the holy days but not on 1/1 or 8/15 because school is not in session. As a CCD kid myself and now a CCD parent I am cognizant of the difference between school families and CCD families.
We have a bad snow here in Nebraska but mine were the only kids at Mass this morning at 10 am. No homeschoolers either. The weather is worsening so hopefully everyone went last night but I wanted to vent once again that relaxing the rules leads to chaos for holy day Mass attendance.
I believe the same would have if moral laws could be relaxed. The Lambeth Conference in 1930 relaxed the rules but everybody ran through. Thalidimide gave people cause to relax their thinking in abortion but now we have abortion on demand and it has reached near sacramental status for the secularists.