It is somewhat unfair asking players to speak out like that, furthermore Nathan is I believe a nice bloke. There is a big difference between liking someone and believing in their tactics.
Players doubting a coach is one thing, being seen to put the boot in is quite another, especially so if the coach is "one of the lads". Any decision to change should be taken in the boardroom not the dressing room.
I remain convinced that Nathan Brown is a good "coach" but a poor "leader".