I'm glad they at least had the bravery to provide a concrete example of what they mean by "complexity". Clearly their example of "React = complex" vs "JavaScript = simple" is actually a fairly controversial take. Does "simple" mean "better", if not, I think we should be chasing the latter.

I'm not even sure it's a controversial take, more of react devs (don't worry, myself included) feeling called out and getting defensive instead of trying to understand something simple.