Bye plastic, bye modern goods, bye technology, bye datacentres, bye freedom of transport. People really don't understand what they're wishing for.
Let me introduce you to ethylene crackers.
mikrl said that the amount of oil used in "non energy applications" (plastic feedstock, but also lubrication, and probably other uses) was only 10%, and that if we stopped using oil for energy, then oil would essentially become an unlimited resource - demand would be nowhere near available supply.
You replied that using fossil fuels 10x more slowly would just reduce the rate that the temperature increased. You totally missed mikrl's point - if you had understood it, you would not have replied as though the 10% was being used as a fossil fuel, contributing to global warming.
I pointed out that the use being discussed wasn't as a fossil fuel (and therefore that you were missing the point).
You replied that there is still some use of fossil fuel to make petroleum usable as plastic. Um, I never said there wasn't. And that still isn't the point under discussion.
That aside though, even if it was ‘just’ a 10x reduction in usage for energy that would still be a huge win because that becomes massively easier to mitigate and offset in effective ways.
Every time you increase or decrease the scale of a problem by an order of magnitude it changes the dynamics of approaching it significantly.