Limited to them its just an unhealthy lifestyle. But if used as some sort of a competitive advantage against those with families and interests beyond work this creates an unfair and awkward work environment.
There are people who look to fill a hole with work when the solution is to find a more balanced life. Workplaces should be alert to and proactively discourage this. Work is primarily about work, professionalism, not a place to socialize. And the 'bro culture', open offices show to an extent some workplaces encouraging it.