Shame
Ever wondered why Santa Claus goes "ho ho ho"? Turns out it means exactly what you think it means. Santa keeps an additional naughty list of unfaithful married couples, especially those high in the political ladder and the military chain of command. One wrong move and the whole world gets to find out how much of a ho-ho-ho you or your spouse has been
Alternative "countermeasures"
For would-be grinches lower in prominence, Santa has other methods. Let it not be said that he's a one trick reindeer.
Santa has been utilising psyops long before there was even a NORAD. The commercialisation of Christmas was part of his master plan. All the trappings of Christmas, like gifting, endless jingles, Whamageddon etc, are a sustained DDoS(Distributed Disruption of Surliness) attack waged by the corporations who are really Santa's proxy botnet.
On the big day itself, Santa deploys his air force to clear the way. Using their powerful ECM(Extremely Childlike Merriness) packages, highly trained elf pilots flying dedicated strike festives perform SEAD(Shutting-up Extremely Annoying unDesirables) missions. They are supported by AWACS(Archaic Wassailing And Carolling Sleighs) craft who perform command and control duties over the airspace. These provide guidance and help out with their ECCM(Eggnog-Caused Conclusive Meliorism). NORAD never stood a chance.