Don't you think if the very modern CM-102 and KH-58USK armi the US SHOULD have received the AARGM-ER instead of only the 88?

There's a massive Jump in generation and capabilities between the 2 missile mentioned and the 88, ff that's not even the E version It would make no sense at all, with such modern missile US should have received AARGM-ER, and i know it's dev but i'm sure US won't receive It