I think you're arguing two entirely different things.

Loony is saying Disc 1 Cloud is a cypher of the player, to shove whims in as they like. This is true.

Shishi is saying Disc 1 Cloud, AS a Cypher, does not matter, or at least all the optional dialogues do not count, as none of the decisions are 'canon'- Arguably, Tifa's date is, having been in two Square released compilations of the script, but pfeh- and that the real meat and potatos comes when the illusion of choice is removed from the player, when he breaks down and we learn his true self and motivations. This is also true.