Not everyone, Kevie should never of been appointed coach in the first place and only got to a grand final due to the almost perfect roster he had. (put a quality hooker in that finals team and we beat Penrith).
We lose key players and look where we finish, Penrith lose key players and make grand final again, injuries included for both squads. Maguire has at least won a grand final, state of origin series and beat a good Australian team 30-0 coaching NZ.
Yes is West Tigers appointment didn't go well but he is in good company there Sheens, Cleary, and Benji to name a few have all failed with that poisoned chalice.
They say "without a 'great roster' a good coach can't win a grand final, but a bad coach will definitely lose one with it".