Good comments from all there.

GTJD is indeed an essential facet of IT but I agree it is beginning to be associated with poor quality blusterers who brag about their number of hours. Happily it's not a thing for me nowadays though where it is actually needed for a proper reason I'll put the work in - at my discretion and with pleasure. What I won't do is slog for an arbitrary unobtainable deadline - I've had too many times where I've done that to be met by - cool, we'll look at this later, or whatever.