Not really. If government fiat takes away my US visa, and for some reason does so instantaneously with no grace period, then I'd still only be an illegal alien

Not really. If government fiat takes away my US visa, and for some reason does so instantaneously with no grace period, then I'd still only be an illegal alien for the few days it takes to get my affairs in order and fly home. The kind of tech worker who's employed full time at github isn't in a remotely comparable situation to someone who's in the country illegally.