"With due respect, I think that is red herring," Mr Cox said.
He implied Mr Morrison was getting issues of collegiality and democracy confused.
Whangarei businessman Frank Newman addressed three submissions that carried his and others' names. Mr Newman said there "was a general view" that large councils could shut individuals out of the democratic process, were less in touch with community, developed a culture that often compromised individuals' and property rights, were less transparent and more open to "soft corruption".
Mr Newman said nowhere in the commission's reformation proposal were financial or other tangible gains outlined.
He said 90 per cent of Northland ratepayers would face a rates increase to absorb Kaipara District's debt blow-out, and criticised the proposal to ring-fence that debt for only six years.
The reform proposal itself was spurred by former Far North mayor Wayne Brown and also demonstrated the commission's desire to bring change that central government wanted, he said.
Northland's new leaders, John Carter (Far North mayor), Sheryl Mai (Whangarei) and Bill Shepherd (Northland Regional Council), worked well together and would collectively make good decisions for the region, he said.
"It is absurd to assume that Northland can't speak with one voice."
At one stage Mr Morrison had to raise his voice to say "talk to the Northland draft" when Mr Newman insisted on noting the similarities between the commission's Northland and Hawke's Bay proposals despite the regions' differences.
The hearings continue in Mangawhai today.