u/Empty_Contract_2461

My wife's on AS34 from SEA that was supposed to go to JFK and got diverted to LAX due to "icing", which doesn't add up (from my amateur perspective). Surely the plane (a 737 Max 9) is properly equipped for this kind of thing? Is this actually a maintenance/mechanical issue with the de-icing equipment?

Thanks for ideas/information. First time experiencing an icing-related flight redirection, and I would have said that I'd flown a lot.