That Poppy and Grimes announced their collaboration over social media, and some fans are happy -- but others are pissed that Grimes would work with Poppy, and it all ties back to the #MeToo movement, Poppy's origin story, and Mars Argo, real name Brittany Sheets. https://twitter.com/Grimezsz/status/991793399807164416 Mars Argo is suing Poppy, real name Moriah Pereira, for copyright infringement, common law…