Interesting article but I think the premise that workers are buying tech stocks because they fear automation is incorrect. Gallup found 13% of Americans thought that their jobs would soon be replaced by automation[1]. In fact you usually find more people worried about immigration than automation[2]. Maybe people /should/ be more concerned about automation but they just aren’t right now. [1]: http://news.gallup.com/po…
I don't think there's a big difference in being replaced by a 'robot' from overseas or a robot that was built in the US. Either way it means your value to society is gone.
Your value to society is much more than that. You have value for friends, relatives. You also bring some idea that may be used by others. You may fix or build things that will be of value to someone else. Etc. This is very important.
The other argument is that if you reduce yourself to work, then you'll give credits to the argument that work is everything and that, for example, unemployment is to be ashamed of.