We did WFH during the pandemic and civilization didn't end. People commuting to work represents a significant amount of oil usage.
The Middle East does not supply 100% of the oil in the world. It's a large chunk to be sure, but there's some simple measures we can do to make significant reductions in oil usage. We've done it before during the pandemic, and those policies weren't actually focused on reducing oil consumption still but managed to cut oil consumption by ~20%.