On the Wider Significance of Yo-Yo

[Juan_Agudelo]

I just read the yo-yo column Who invented the yo-yo, and why?, and couldn’t help but notice the side note:

(Aside: The word “yo-yo” has now taken on wider significance, and can mean “to vacillate” as when applied to a politician, or “stupid” as when applied to a jerk.)

¿Does it mean that stupid jerks are only considered as such when they are not into politics, and otherwise are vacillating politicians?