You don't lose freedom by switching fuel. Emphatically so when you didn't get a say in the old fuel either, and even more emphatically when the new one is cheaper overall than the old.
A quick google (because I'm not a trucker) suggests the gross fuel expenses of a truck are $0.40-$0.55/mile.
Thus electric is cheaper, with the usual caveats for extrapolation from the sales blurb from a single model vs. the empirical observations of the actually existing alternative. As none of the voluminous criticism I've seen and read of Tesla is about the fuel efficiency being over-optimistic, I'm willing to believe them on this.
[0] the worst claim I found with a quick google was 50% capacity at 600, the best claim was a factor of ten better; the servicing probably isn't going to be free, but a 50% capacity battery is still useful for fixed installations so I'm going to assume that's a wash.
[1] 500 mile range model $180k, 300 mile range model $150k, so extra 200 miles cost $30k, so 500 mile peak capacity costs $30k/200*500 = $75k
When the new fuel is cheaper and suitable for consumer's needs, there will be no need to "drag" them along or prohibit choices. I believe this is what the comment was referencing.