I like using nature as the proof of dialectics. Nothing exists in isolation. You can't point to the individual anything that produced itself and isn't impacted by the environment it shapes. The world is ecosystems on top of ecosystems, all of them interconnected and interdependent. They're obviously part of the natural collective of the biosphere. If someone acts individually and pollutes a river, that has downstream consequences that degrade systems it only has a tertiary connection to. Waterways are the commons because they're a natural collective with individual responsibility for the health of the ecosystem supporting our health. If a world of individualists ignore the collective nature of the biosphere, we fill the atmosphere with more greenhouse gases than it can dissipate. Only collectivist action can address the collective problem of climate change or its consequences.

The human ecosystems built on the natural ones aren't different. You survived childhood because a community was raised by historical communities. If an individualist went against their collective responsibility and polluted your waterways, you'd die of some illness. If that common water wasn't delivered through pipes the collective produced, you'd be dead within a few days or fighting other individualists to drain the diseased wells they shit in. If the collective bodies of science and food systems didn't align, you'd starve. The dysfunctions in those systems come from individualists rebelling against the collective responsibilities to ethics and socioecological impacts. Individualists seeking profit or glory at the expense of someone else, collective progress held behind individualistic corporate patents, grocers that punish the hungry for starving and the farmers for growing food.

What they're doing is protestant work ethic shit, moral Calvinism meant to trick them into thinking they can solve climate change by recycling by the polluting industries. A boss can use that to abuse and dehumanise their workers. The wealthy can use it to explain why they shouldn't pay taxes while stealing from the socioecological systems they degrade. It's good logic if you already have power and can afford to meet all of your own needs in a bunker you built yourself, but for anyone who lives in a society it's bad logic. I don't know my neighbours' names but if their lives get worse because I enrich myself at their expense, they will steal all of my nice things and shoot me. If climate change or a tax deficit or an economic crash collapses that society and there isn't a collectivist framework to protect me, being an individualistic prepper just makes me a target for people who don't feel obligated to support their neighbours.