For semis this is irrelevant, as the GVWR is pretty much the same so EV mostly means you get limited on payload weight: in the US the feds increase GVWR limit by 2000 lbs (from 80k to 82k) for EV semis, but not every state has legalised that, and it's barely noticeable (EU has a much more aggressive bye, from 40 to 44 tonnes).

I doubt that's the case in America where gas-powered cars (/ trucks) are also huge and heavy.

A Model 3 weighs less than a Ford 150.