Think of how stupid the average genZer is, then remember: half of them are stupider than that.

I'd guess it has to do with the benefit of doubt based on a lack of evidence, and a dash of confirmation bias thrown in. For example, there's plenty of evidence that the generations before them suck at choosing leaders and then suck at governing when they finally get a seat at the table. I would choose to defend millennials because as an older millennial I am biased toward that generation. But Gen Z doesn't yet have a lot of evidence out there in either direction.

All that said, I feel like the statement "Boomers destroyed the planet in essentially every way and made life worse for every generation that preceded and followed it" is just fact. But again, I'm biased.

“I used to wonder how it was possible that Trump could have won in 2016 and then again in 2024, given how emotionally toxic, morally vacant, and psychologically mangled he is. I do not wonder anymore. He won for that exact reason. He was not a candidate. He was a mirror. If you were a racist, you found your guy. If you were a misogynist, you found your guy. If money was your only religion, you found your guy. If your heart was armoured shut, you found your guy. If you mocked disabled people, you found your guy. If you hated intelligent people, you found your guy. If you were a rapist, you found your guy. If you enjoyed golden showers with Russian sex workers, you found your guy. If you had done absolutely nothing to confront your emotional wreckage, you found your guy. If you were a serial cheater, you found your guy. If you were a perpetual bankrupt, you found your guy. If you stiffed honest workers, you found your guy. If you were a conman, you found your guy. If you mocked people’s appearances, you found your guy. If you longed for a toxic Daddy, you found your guy. If you were dissociated and disembodied, you found your guy. If you were unconscionable in every economic dealing, you found your guy. If you lied as naturally as breathing, you found your guy. If you had never eaten a green vegetable, you found your guy. If you were a white supremacist, you found your guy. If your ego contained a hole so large not even the presidency could fill it, you found your guy. If you were a sociopath who cared not one molecule about other humans, you found your guy. If he had only two of these traits, he never would have won. He won because he had hundreds of them, and millions of people recognized themselves in at least one. This has never been about Trump. It has always been about the people who finally had their worst instincts validated. Trump did not create the cruelty, he licensed it. He handed out permission slips for hate. He is merely a symptom of a far deeper disease: collective toxicity. If there is one sentence that explains Trump’s power, it is this: “He says the things I’m thinking.” That is the part that should chill the spine. Who knew that tens of millions of Americans were thinking such unconscionable things about their fellow citizens? Who knew how many white men felt so threatened by women and challenged by minorities that they were ready to torch democracy to feel big again? Who knew that after decades of apparent progress on race and gender, so many people were living in seething resentment, waiting for a demagogue to legitimize their worst selves and convert their bitterness into political power? We were living in a fool’s paradise. We aren’t anymore." — Michael Jochum

To be fair, he said "Gen Z Trump voters", not simple Gen Z.

https://www.yahoo.com/news/science/articles/reverse-flynn-effect-hits-gen-123020869.html

https://www.vice.com/en/article/gen-z-is-the-first-generation-dumber-than-their-parents-neuroscientist-claims/

ignorance is though.