The body with the motor and batteries does not counterspin in this stirrer gadget. Why ?

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The body with the motor and batteries does not counterspin in this stirrer gadget. Why ?

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Assuming it's for real: it looks like it uses vibration to effect rotary motion. No violation of any physical laws, as far as I can tell,

 

The body with the motor and batteries does not counterspin in this stirrer gadget. Why ?

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Body looks like it is spinning to me.

 

Well... real, it is. Not a new gadget, been in the market for years :
----> https://duckduckgo.com/?q=auto+stirrer+cordless&t=canonical&iax=images&ia=images

And spinnaker, yes, seems to 'walk' ---->