Yea, every industry makes this claim and it either means that no one wants to do the job because it is harmful or doesn't pay well enough. I don't think it is a good counter argument to the automation of one of the largest industries that employ people in the United States. Even if you take the claim that it won't impact jobs you have to look at other people in the ecosystem and how their jobs will be impacted (automated trucks don't need to eat or sleep and that means those truck stops will stop existing).