What is the problem with checking the entire fleet as a matter of immediate urgency? I haven't seen Steve P suggest anything else (unless I've missed it?)
If I was told by my car manufacturer that there may be chassis cracking and I should get it checked, I would make that an immediate priority. Why wouldn't I do that with a jet?
Perhaps QF management would rather not know if other aircraft have problems until they are mandated to check them.
That statement has a ring of truth about it. If all else fails, plausible deniability will see us through!