plausible explanation for this level of incompetence
Competence is irrelevant. He's not here to "govern effectively", he's here to dismantle the U.S. and its allies and turn them into vassal states for the CCP, Putin Regime, the House of Saud, and any other authoritarian who wants in on the action.
Once again: gruesomely killing Elon Musk isn't a viable, practical, nor moral solution to preventing his dismantling of our federal republic.
To answer your "straw-man" question and play your game: wildcat or general strike, armed revolution, or insurgency. Striking is the solution with the least potential bloodshed.
Good luck trying cut up Musk with a machete or trying to fight the US military domestically which uses Predator drones armed with Hellfire missiles, not to mention fifth generation multi-role fighter aircraft and Apache gunships. Even if you succeed getting to him and chopping him up, guess what? You're still a psychopath because only psychopaths willingly dismember people.
No, it's not good to chop people up, no matter how much you hate them. Elon should be stopped. That's it. Stop acting "hard" on the internet. It makes you look stupid.
Edit: All the wannabe sicarios in the comments will wilt like the bitch-made invertebrates they are when actually faced with the prospect of dismembering a person. If they don't, they're psychopaths who need psychiatric treatment.
Competence is irrelevant. He's not here to "govern effectively", he's here to dismantle the U.S. and its allies and turn them into vassal states for the CCP, Putin Regime, the House of Saud, and any other authoritarian who wants in on the action.