Under capitalism, if you go broke, you're broke. Boeing is broke, because the executives took all the cash for themselves via buybacks.
If the taxpayers are getting their wallet out, it should be to purchase something. So, they will be purchasing equity in the bankrupt company.
If Boeing doesn't like it, they can go pound sand, or maybe the executives could use the money (that formerly belonged to the shareholders) to purchase the shares themselves. Of course they don't want that, they want to have their cake and eat it too, again.