Anyone moving to bay area for a higher income job would have most of these issues.
A forum full of people willing to migrate for better income and lifestyle should not be criticizing "cost of moving", "social connections", "health disabilities" and "retirement".
Your criticisms are all reasonable, but they are exactly the sort of things I'd hope to see discussed in the comments. And they are! I think the article is a good starting point for a discussion on what's possible. I'm nowhere near as extreme as the author of the piece, but I live a life much closer to what he describes than most people here.
Rather than being soured by the response, I'm glad to see both the pros and the cons being discussed. Yes, there are lots of ethical issues about living the way he suggests. There are lots of things you'll be doing without. But there are also lots of upsides about living in a way that you have time to do things besides just work and sleep. Which parts of the response did you find souring?