To be fair, it wasn't just Starfleet he saw that way, it literally was all humanity.
No, I recall him saying
"Starfleet officers wouldn't act like that..." GR still acknowledged that not all of humanity was perfect yet, although it was a goal. But conflict in scripts couldn't be among the main cast (all Starfleet people), and Michael Pillar often spoke about trying to get around GR's restrictions.
I wonder how much of that rule was misinterpreted by the writing staff. In "Chaos on the Bridge," Maurice Hurley made it sound as if he was the one who strictly imposed the "no conflict" rule during his tenure even getting into arguments with Roddenberry about loosening up on it.
I've always wonder — and I haven't seen any memos supporting this theory — that the "no conflict" rule meant no petty soap opera or typical nighttime drama conflicts, like sleeping behind each others backs, jealousness, envy, etc. That the crew, like on the original, would still have conflicts over the decisions that we're being made to resolve a situation.