That observation[0] isn't particularly useful for arguing that it's a political allegiance thing. A lower fraction of voters in the pro-tech part of California (SFO, roughly) voted for Trump than, say, in NYC. Your observation cuts against the argument that political allegiance is the main driver, not in favor of it.
[0]- Assuming it's true, which in my experience it isn't especially, but this isn't the best argument.
[0]- Assuming it's true, which in my experience it isn't especially, but this isn't the best argument.