The point is that while a person should lose their driving privileges for driving drunk, we should take seriously the implications of the typical punishment given our car dependent society, and the lack of public transit options in most places that aren’t big city centers.
The comment was a reaction to the flippant “just get a bike”, which is clearly not sufficient in many cases. Driving drunk is stupid, dangerous, and should involve serious penalties. We should not ruin people’s lives over it.