Of course you may. Quite simply, Steve has been openly re-writing history with regards to his time in Genesis for quite some time now. The Steve Hackett who now claims to have been pushing for bells and whistles in Supper's Ready is the same Steve Hackett who told Hugh Fielder in the mid-eighties that he wasn't at all sure about said song, that it was too long and altogether too much of a musical gamble.
Why, thank you
I can't say I see much of a contradiction there - especially since he was often reduced to adding bells and whistles to er... private parts and pieces in the first place.
Anyhow, he was there, so I guess we'll have to take his multifaceted word for it.
(Let's take this up again when he starts to claim credit for the abysmal Invisible Touch!)