Why has Systems Thinking become so popular?

I see more and more people pop up on LinkedIn and other social networks talking about Systems Thinking (of course this could just be algorithms feeding me the stuff they know I want to read.... but I think it's more than that).

I came across this blog post:

https://sustainabletompkins.org/signs-of-sustainability/tompkins-weekly-column/signs-of-sustainability-systems-thinking-the-historical-background/

which made me think there's a really simple answer. I see and feel the desire to do something to deal with the clear existential threat that is climate change AND the growth of technology, but I want to understand what small actions can make the biggest difference.

I've become drawn to Systems Thinking in an effort to try and understand where to prod for change. Where to start? What knock on impacts will one small action make in our larger societal problems.

What do you think?