Very little oil is used to make plastic.

In Europe between 4–6% of oil and gas is used for producing plastics and globally around 6% of global oil is used. By contrast, 87% is used for transport, electricity and heating.

https://www.bpf.co.uk/press/Oil_Consumption.aspx

▲

XorNot an hour ago | parent [-]

6% is hardly a small fraction at scale.

	▲	UncleMeat an hour ago \| parent [-]
		If we could reduce our oil usage by 94% I'd weep with joy. Yes that's still a lot of oil. But it would be a complete sea change from what is currently happening.