You verbatim asked "why pay $200k for a software engineer same talent can live outside of the bay area and can do with 1/3rd of the salary" and you got a response. If you think there's truth in what I'm saying but find that response "unpleasant and combative", I have two suggestions for you:
1. Communicate more clearly. If you are meaning to express an argument rhetorically or as a "devil's advocate" but it's easy to misinterpret your statement as if you simply support it, consider rewriting your comment for clarity.
2. Rethink your premises. If you actually do believe what it is you're saying, consider that you're the argument of "same talent for 1/3rd of the price" is the original offshoring argument, which has well known conceptual issues.
If you're more thoughtful about checking your assumptions when you could be wrong, it will be much less likely that you end up in a situation where you find yourself saying "Gee, I found so and so's response unpleasant and combative, even though there is truth in what you're saying." If you put your hand on the stove, do you criticize the stove, or do you realize that maybe it was a mistake to put your hand there and then move it away?