So? Tech workers commute from their air-conditioned houses in their air-conditioned cars to their air-conditioned offices, then shop in air-conditioned stores--

So? Tech workers commute from their air-conditioned houses in their air-conditioned cars to their air-conditioned offices, then shop in air-conditioned stores--then back to their air-conditioned houses. So they only need to spend a small amount of time in the heat.