Well, if that was entire point that Shapeshifter was trying to make, they should have made it. Unfortunately that's not what they said.There's a different between liking it and expecting future installments to be beholden to every detail.
"If it were beholden to what has come before it would never do anything new."
"What has come before" can mean anything. From the tiniest detail on a computer screen to the longest running story arc that spanned multiple shows. Making a statement that is that broad with no examples to support it doesn't make for a good argument. Also, telling fans what to do with the things they like is never nice.