Keeping your workers undereducated is really only beneficial if you have a feudal/plantation agricultural economy, and outside some of the really psycho CHUDs idk how many American capitalists want the US regressing back into the late Holy Roman Empire.

The US was able to get away with this through brain drain. All the difficult technical and intellectual work was done by brain drained professionals from the Global South while the domestic population was barely educated enough to be a wage slave. But now that those professionals are less likely to travel to the US or are repatriating back (as we have seen with Chinese scientists due to Sinophobia), the chickens are coming home to roost.

Actual US domestic talent has been lacking for a very long time, and it's only going to get worse.