As someone else mentioned in this thread, it is not possible to understand how everything you purchase works. That is also incredibly infeasible. What you are asking is to effectively revert back two hundred years of technological progress (a rough estimate for the last time people were actually self sufficient at a local level).
I can't count how many studies I've seen referenced that claim the environment is effectively doomed by 2030 if we don't change course. The same goes for other areas, whether its concerns raised over the risk of chemical exposure or the fragility of our toilet paper and baby formula infrastructure when a pandemic is declared.
If you think that many of the inventions over the last couple centuries are the culprit and would have to be rolled back, that sounds miserable but it also sounds like we at least would have a better chance being proactive rather then waiting for everything to come crumbling down.
I don't personally expect climate change or chemical exposure to destroy us all, life finds a way. But if we can't expect consumers to make purchasing decisions that generally align with what they think is important, why do we even bother with markets or capitalism at all?
