Why doesnt the nasams get amraam-er stock

As per title, the stock missiles for the nasams, the aim-9x and aim-120-c7 are terrible and some of the slowest at its br. What could possibly be the justification for locking it in tier 3 of the modification tree when most spaa already get all missiles stock

an excuse for them to say it’s “progression”, as there is no real reason to go through spading multi vehicle sams other than to get better missiles. multi vehicle sams in general are a mess and suck to play.