So, am I to understand from the above comments that individuals have no right to decline to comment or limit what he says in the media?
I believe Joey, and everyone else, does - must - have that right.
And if Joey's limited comments - he's not declining to comment, he's just limiting what he says - is his way of protecting himself [and his team and club, by the way] or achieving his or the club's PR objective/s, more power to him.
A counter view to all the criticism of what he is doing is that it's strong [it takes strength to hold firm in the face of repeated questioning and criticism, however ill-informed] and may well prove to be clever.
Actually, to provide some context, ever seen a Wayne Bennett post-match press conference? Maybe check out a few and see what you think.