Though I totally agree with that 'saying' 'One must do their best before falling back to luck', you must understand that one can only try their best, if they remain optimistic throughout. Good wishes aim to bring about such positivism in the group. And as for 'hang in there', what makes you think that those in 440s have no chance, or that telling them to hang on equates to false hope? H
an example for you.
@EnthuChap was stuck in the limbo since forever. His CRS is about 442. Each draw acted as the abysmal dark encroaching further and further upon his ray of hope. A couple of weeks ago he landed an OINP invitation. Now do you think it was wrong to ask such a guy to 'hang on' when he was feeling down some? He is one of the greatest motivational stories this group has seen so far (and his is not an isolated case).
So please, try to understand the significance of 'hang on' and 'good luck', before you jump in with your stoicism.
Besides, this is not something to even argue about. It's a human thing to wish well upon others. Men wish each other good luck, even when in a failing cause, because such is the meaning of the phrase 'good luck'. A good dose of luck can outdo peril. And equally truthful is the saying, that 'without luck, even the best of preparations may fail'. Moreover, wishing well upon others is very well a part of most cultures around the world! How can you even go against something so universal!