IMHO, if any religion is being promoted by this entire affair it is either agnosticism or atheism.
With respect to Christianity, the entire affair is a Catch-22. The Church Age surpasses the Mosaic Law. As a believer in Christ, it's a bit foolish to get too miffed over the entire issue as it tends to communicate the wrong news to those not yet informed of the Gospel. Conversely, implications that the 10 Commandments have no place in jurisprudence is equally as absurd.
I suspect the entire affair is like so many satanicly contrived arguments reminescent of the Clinton years. If one falls for advocating either side of the argument, one has already missed more important issues.
As I've said, the issues are simple constuctionism.
1. No official national or state church has been established. If it has someone point to the law, and then to the place where I'm required to sign up.
2. The judge should be permitted to decorate in his style, the same as other chief justices before him have been able to decorate in their style. It's just a piece of artwork that is his expression in his workplace over an area that he is responsible for decorating.
3. It is an historic display demonstrating the derivations of American law.
For any of those issues, I cannot understand why this monument is any problem.