Is Trump afraid of Musk?

For the past 4 days Musk has been bad mouthing Trump’s spending bill – and Trump has said nothing (not even on Truth Social). Usually a person could say something like Trump forgot to tie his shoes and within hours Trump would be calling that person nasty. So I think it is because Musk has info on Trump - so Trump is afraid to rock the boat.
It could also be because Trump and Musk were best friends – just kidding Trump doesn't have a loyal bone in his body. Cheers!