Could it possibly be they are both right and both wrong? I know everything in the world you live in is black & white and must pass your purity test but the rest of us live in the real world.
Musk is correct, spending must be cut or this country is going to go bankrupt but he's also wrong. Unfortunately the political situation will not allow the cuts that are needed. Democrats will not support the slightest cut to anything and enough of the Republicans will vote against any needed cut that nothing will passed either the Senate or the House. Trump is correct in he has a small window to get some of what is needed and we must grow the economy dramatically, he's wrong for not cutting enough.
None of us want a monarchy or a single person making all the decisions in this country. Unfortunately with the divide we see in this country, getting Congress to agree on seriously needed spending cuts is impossible.
If we are to get control of spending in this country, serious and dramatic cuts must be made to Medicare, Social Security and defense spending. How do you propose Trump, Musk or anyone else for that matter get those cuts through the disfunction Congress we have? Democrats will not cut a dime and are fighting tooth and nail to keep the ridiculous and corrupt spending the DOGE committee found. Add in all the Military industrial complex reps and we get no cuts to anything. Leaving only one real option, we have to cut what we can get through Congress and grow our way out of this. With all the obstruction, growing our way out may not be possible.