"They are opportunistic grifters, and they could just change their policy settings after the election, by simple majority of a handful of people."
No, not at all. Well, at least not about them being opportunistic grifters. But the part about changing policy: my point is that we have no actions to judge them by yet, only words. And even those words leave plenty of wriggle room - e.g. Q said she would be fine to work with NZF even though their leader is a racist, misogynist jackass who even in Q's words wants to drag NZ back to the 1950s (as long as he isn't FM, but avoids answering would it be OK for him to DPM then, or PM?)
I *want* them be good and do well enough to elbow out NZF if no-one else, and I almost joined them myself before settling on the Greens. I even know one of their candidates; used to work with her, she's no idiot. But at the moment they're doing a very credible impression of being OK with being in bed with the worst the country has to offer.