Amen.

I have been very disappointed in seeing a number of bitcoiners whom I highly respect showing support for Milei.

Is it possible that they're right and I'm wrong ? Always worth considering that possibility but the signs are so abundantly clear that Milei is "a complete sellout and a US empire dog", as you put it, that I'm very confident (sadly) that no, they are wrong and are either being willfully or ignorantly blind.