That truck driver article matches what I've read elsewhere. He should have added that more double stack container rail cars are needed--if there is more capacity on the rail system for more trains. The container terminals can hire more clerks to keep the gates open more hours, and perhaps hire more crane operators, but they can't call the union hall to get more of the wheeled gantry cranes or top-lift trucks (like giant fork-lifts that lift a contain from the top) to move the containers to truck chassis; what they've got is all there is. I just read about a company that knows their imported cargo is on the Long Beach container terminal, but the terminal has no space to remove the containers on top of it to get to that one.
We need to recall the real reason for the glut in the supply chain---during the pandemic shut down consumers stopped spending on services and now are spending more on stuff. The supply meets normal levels with the exception of things like a semiconductor plant fire, Chinese factories previously locked down due to Covid, the Chinese power crunch (they're having a spat with Australia and won't buy their coal for the power plants), and other things that have nearly returned to normal by now. Demand has skyrocketed. Economist Paul Krugman has postulated that what is needed to normalize the supply chain is a national vaccine mandate so people will feel safe spending on services--restaurants, theaters, vacations, etc.--and return to buying a normal level of stuff. Ain't gonn'a happen, and we'll have to wait until everything levels out by itself.
Somebody several pages back made a comment about the possibility of Head e-Whatever skis in short supply due to the semiconductor chips inside. That might be the case--I've look at a couple of big on line stores, and their supply of these skis is very slim.
If you want something, and find it, buy it now, not later. That goes for Christmas gifts, your ski gear lusts, all of it.