It’s not fear, it’s cost-benefit, and it would take all the trucks in the middle east to move a tiny portion of the export that typically goes via ship. It would be easier and more aligned for Qatar, UAE, Saudis to pay mercs to keep the strait clear.
> it would take all the trucks in the middle east to move a tiny portion of the export that typically goes via ship
May I suggest an alternative mode of freight that pre-dates trucks and can move much larger volumes at a much lower CO2 cost, namely... a transcontinental train line?
(obviously not going to happen, and might even trigger a few PR cycles about a "hyperloop", but if you were going to try to build large-volume freight, that's where I'd start)