Norway only has 5 million people. (In total. No idea how many of them use Facebook, but it's unlikely to be more than that.) How much money do you think Meta makes out of advertising to them?
A million kroner a day is real money and will substantially affect Meta's profits in that country. It won't beggar the global company, obviously, but it will make them look for different ways of doing things at least in Norway. Which is the objective.