I am not sure that *is* too fair actually If the defence is good enough you can win the league with a less than outstanding (dodgy) keeper, look at Lehmann at Arsenal. The problem I feel is the midfield and defence, as from the highlights I have seen, Henderson has not actually been as much as fault for the goals as our defence/midfield not getting a foot in when they should, and he has been left with no chance because of this. But if in doubt, blame the keeper.
If Kuipers comes back and we are still leaking goals like a sieve, then we can stop this debate once and for all and agree it's the team in general which isn't good enough, not Henderson, not McCammon, not Chaigneau or any one player.