When I learned His Sabbath wasn’t Saturday or Sunday every week, it seemed certain scriptures had new meanings and the Sunday laws seemed more like Daniel 7:25...
Not sure where you’re going with that (could be I need more coffee) - but I don’t necessarily agree with the parallel to Daniel 7:25.
It’s one thing for believers to keep the Sabbath - or keep the Shabbat - it’s quite another for them to legislate that everyone else has to as well.