I am not familiar with the Nordic legal environment, but this could be that because Pfizer has a better safety profile than Moderna, so they'd rather use Pfizer. At the same time, both Pfizer and Moderna are much safer than raw covid according to all direct data that I've seen.
Haha, not sure about below 30, but below 18 both covid and vaccines have minuscule negative impact. Instead of arguing whether the impact is 1:100,000 or 1:90,000 (AHA, vaccine mandates for children are a moral imperative because after adjusting for adverse effects short term numbers lean oh so slightly in favor of vaccines), perhaps drop the conversation as irrelevant altogether? There are other concerns in life...