To clarify, is this talking about winning entire state gov elections? As in, in the future, ON wins QLD? I look at the long-term damage done by someone like Bjelke-Petersen.
A couple of seats gives them power but can backfire. Giving them a government allows for serious political corruption and more ability to maintain their power.
If this ABC podcast episode backed up that comment with some analysis, I'd like to give it a quick listen. Was it just recent?