You can't forbid anyone on your property from practicing their religion but you can ask them to leave. It's an important distinction.
You're being pedantic, but in spite of your parsing, it still amounts to a de facto authority of a property owner to assert the right to allow or disallow armed persons on their property.
If I'm being pedantic then you are being obtuse. Private property rights do not supersede other rights. You can ask someone to leave your property for any reason you like, but you can't remove their rights.
You conveniently overlook the fact that the property owner's rights are among the rights, privileges and immunities guaranteed by the Constitution.
No...I don't.
no property owner is obligated to allow you to exercise your rights on their property.
Their only legal remedy is to ask the person to leave their property. They can not restrain someone from exercising their rights.
""Can I carry my loaded and concealed firearm (assuming I have a license to do so) in a New Hampshire business (public place) such as Costco that has a NO FIREARMS sign posted?
NO, private property rights prevail."
Nowhere did I say a private property owner can infringe/remove/abrogate your Constitional rights, but they can forbid you from exercising those rights on their property as they see fit.
My time is entirely too valuable to keep educating you for free. Call the author of the piece, Atty Penny Dean, 59 Warren St Concord, NH 03301, (603) 230-9999. Perhaps you can call her to account for the false, misleading information she authored on behalf of GO-NH, Inc.
Here's the website for Gun Owners of New Hampshire: http://www.gonh.org/
Contact them and tell them Atty Dean has provided them with incorrect information so they can demand their money back.
Finally, here's the website for the NH State Bar:
Go there and file a complaint against the attorney for providing erroneous and misleading legal advice, as her analysis was essentially the same as mine, with which you so vociferously disagree.