In all your years with QF can you honestly say you heard any aircraft call "not yet on the gate" if they had to pause shortly and maybe obstruct a taxyway?
I understand where you are coming from of course but to say it is bad airmanship on the part of the CRJ crew is incorrect.
I expect you have had your perspective warped slightly from all those years operating from Aus airports where the ATC like to do things slightly differently to the rest of the world as they know better.