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There should be a system wide toggle to turn it off. macOS should also have it.
 
I was surprised by the animations a couple weeks back during a work zoom call with my boss. I was talking about a carton/package (I design the artwork on them) and apparently I held that box shape too long and suddenly hearts started to flow out of me. It was a shocking surprise and had us laughing. I looked into it more for other gestures and there are days we need a laugh so I'll use them....but I do wish I could stop them on certain apps because not EVERY meeting will I want to do that and I'd rather have them OFF for Zoom by default.
 
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