Perhaps. Perhaps not.
There are two reasons it would have been this. Either it was a trip code intended purely for a short term operation and the time for it to be cracked using a dictionary attack was seen as workable.
Crypto is disposable. There is a reason it is regularly cycled in the operating world. Even randomly generated 128 bit crypto keys are cycled within a fiscal quarter. Exact schedules are obviously classified.
Or - the fact that people would try to, and eventually succeed in cracking Q's trip was used as a clue or data point in and of itself. Consider it clue on a lit fuse.
Although, if I understand correctly, the trip code is a hashed algo using an input. There is no "getting close" to breaking it. The difference in output is radically different from minor changes in the input (or should be). Getting an output string that is "close" doesn't imply "close" to having the input string. Or shouldn't.