Earlier quoted context omitted.
Crunch time is fine when its uncommon and unforseen. Otherwise it is a manag3ment failure. Perhaps its deliberate failure to respect peoples personal life, but that's still a failure. I've worked plenty of places where crunch time is uncommon or nonexistent. It doesn't have to be that way.
Long crunch times are either a symptom of longterm planning failures (not hired enough people), or it's a deliberate and premeditated attempt to abuse people for cheap labour (why have 10 people do the work when 6 overworked people can do the same job?).
Long crunch times (more than two or three weeks) are strong evidence of deliberately abusive management, who are willing to lower productivity below what it would be with a 40-hour work week for the sake of their egos.