Do you think there is any science behind the 6 ft physical distancing rule?

I have realized from the beginning that most of the so-called ‘science’ behind Covid is imaginary. Over the last year or so, we have learnt that:

1. Surface spread is minimal.
2. Winter weather has minimal impact.
3. We don’t really know what causes spikes.
4. Reopening schools was always a political decision.

However, most of us, including me, thought there was real science behind the 6-ft rule. Doubts about that rule emerged with the Guangzhou restaurant which saw spread well beyond 6 feet. See https://wwwnc.cdc.gov/eid/article/26/7/20-0764_article

However, our CDC and the great Fauci pushed the 6-ft spacing so much that it became a standard precaution.

Recently I have started looking into the science. I found the article linked below which says the 6-ft rule is just a dogma!
https://www.businessinsider.com/6-foot-distancing-rule-is-outdated-oxford-mit-new-system-2020-8

What do you think?