@FantasticalEconomics that over simplifies what's going on.
The congresspeople are looking after their own individual political interests, horse trading among themselves, engaging in PR with the public, etc.
Musk is just riding that for his own benefit, and you're taking the bait.
If our elected representatives thought they'd score more political points passing legislation with the public, then they would, but currently that's just not how we, as a society, have set the table.
We reward them for gridlock, so gridlock is what we get. Has nothing to do with Musk.