Very true, but I guess my argument is that the author is wrong in terms of this being a devastating thing to our current workforce.

If you were 55+ with your only qualification being that you could drive a truck and that niche was automated away, this would absolutely be devastating to you.

Just a thought: What if they only replace retiring/stopping/dying drivers with a driver-less alternative and close off the profession for others?

That would probably be better. In reality, however, a business will go for the cheaper (or required-by-law) option and will more heavily towards humans or automation

To be honest, if I'm 55+, I'm probably not too worried that self driving trucks without attendant drivers might be permitted on some major trunk routes a few years after my retirement