> This all started with the "Engagement Team" like … 15+ years ago. I was there (part of the team). They started with mascots, being cute, having this infantilizing attitude towards users.

Having mascots is fine. It's like having a logo. Having multiple mascots is not good. What does a dinosaur have to do with a Firefox? The dinosaur was supposedly Mozilla's logo, as in Mosaic and Godzilla. Firefox is one of the many projects under the Mozilla umbrella. Keep the fox theme in Firefox communications, leave dinosaurs for Mozilla's one.