You're still not getting it.
FOPA (as quoted
in the article you cite -- she doesn't get it, either):
"Under FOPA, notwithstanding any state or local law, a person is entitled to transport a firearm from any place where he or she may lawfully possess and carry such firearm to any other place where he or she may lawfully possess and carry it
, if the firearm is unloaded and locked out of reach..."
Meckler could not legally possess or carry a handgun in New York, ergo the FOPA does not apply.