Which would be a little awkward if you wanted Thompson paras wouldn't it?
They also don't drop with thompsons, but the point remains that there have been a long series of adjustments to bring all troops that arrive behind the lines down in terms of their strike potential.
JLI had to upgrade when they could infiltrate.
Stormtroops need to buy an assault package.
Infiltration Commandos now have a grenade cooldown timer and next to no men.
Glider commandos do three loops of the map in a huge glider with associated minimap icon and need a huge landing strip.
Paratroopers need to buy a weapon upgrade.
(Patrisans suck so hard they've never been touched.)
They're also an outlier because they're elite infantry with long range firepower that has no MU requirement. Paras, Obers, Guards - they all have their MU cost.
But as I said before, it's not a high priority thing to address. They're fantastic infantry but the commander's still off meta and other things need much more urgent fixes in the OKW lineup alone.