This is a classic fact check where they admit the basis of the claim is true, but then deny the impact and call it mostly false.
They might be right about the impact, they might not, it is a complicated system that is fudged up. I doubt there is a single cause. But, if you believe the OP, that lack of trucks is big part of the problem today, then the fact checkers are most likely wrong and should update.
They might be right about the impact, they might not, it is a complicated system that is fudged up. I doubt there is a single cause. But, if you believe the OP, that lack of trucks is big part of the problem today, then the fact checkers are most likely wrong and should update.