It is a big deal. Crockett was right -- the central issue comes down to whether or not Private Monies are being used to fund Public Displays, and whether or not the Law has established a Legal Prejudice in favor of one religion, against all others.
Let's say a predominantly-Buddhist community in America were to post the Noble Eightfold Path in the foyer of their County courtroom:
And let's say that they did so with the receipt of Private Contributions, according to a Vote of the Community, sequestering none of my Private Property, and instituting no legal prejudice whatsoever against me as a Protestant Christian...
You know what? I'd vote against it as a Corporate Owner of Public Property.... and then, I wouldn't really care. It has not harmed me in any way. I may not agree with their "community standards", but if they have not Established an Unequal Protection of Buddhists to my detriment as a Protestant Christian -- then I have more important things to worry about. Making a Federal Case out of it, makes a Federal Case out of everything. And if Buddhists bothered me that much (they don't, really), I have the freedom to move away -- better by far than calling down the Might of Federal Government, UBER ALLES.
Methinks thou dost protest too much.