The Jetsons take place before The Flintstones?

So I was part of a conversation where some friends were discussing this video:

And one of my friends who uses the name Mysterious Pants brought up the following mind-blowing theory:

“Actually, I like the idea that the Flinstones is, in actuality, the future of the Jetsons after all the computer A.I. and robots leave Earth. Humanity degenerates and, without industrial machinery, relies on the ancestors of genetically altered, talking animals to do all their labor in a mockery of what mechanical things used to for them and live their lives in a pseudo-“modern society” for reasons that have been lost to time. Again, without machines present, the Earth environmentally bounces back (when the floating cities finally drop down to the surface, the Earth has, as it turns out, recovered but has become an overgrown, primordial jungle thanks to the greenhouse effect of all the smog in the upper atmosphere).”

Dude!

Rob