Definitely not, but it needs to be explicitly discussed. The previous claim seemed to have the implicit assumption that any retraining/reallocation is de-facto impossible.

Automation isn't unambiguously bad news for society at large, although you would expect it to be negative for the people being automated. The extent to which this can be mitigated by retraining/wealth transfers is an interesting question that depends as much on the country's culture and political climate as the properties of the technological advancement.