>Most simple labor will be automated very soon anyway.
It's not clear if there's a simple correlation between "training required" and "automation ready". For example, people have been talking about automating radiology for years, although I'm currently finishing up a study on one such system and we certainly aren't there yet. Meanwhile, the relatively "low skill" job of construction is considered very difficult to automate due to the high variability in environments and materials.
This uncertainty means that reluctance to join professions that "may" be automated in the coming years might be interpreted as a result of risk-aversion, and that risk is higher when the job training is longer.
It's not clear if there's a simple correlation between "training required" and "automation ready". For example, people have been talking about automating radiology for years, although I'm currently finishing up a study on one such system and we certainly aren't there yet. Meanwhile, the relatively "low skill" job of construction is considered very difficult to automate due to the high variability in environments and materials.
This uncertainty means that reluctance to join professions that "may" be automated in the coming years might be interpreted as a result of risk-aversion, and that risk is higher when the job training is longer.