I do talks on the making of classic films for senior residences and groups.
Well, one label that affects me is "science fiction" (which is similar to but not the same as your listing of "science fantasy"). I am a fan, a panelist at conventions, and the author of several published books and short stories. To non-fans "science fiction" is still an outsider culture to be mocked at worse or tolerated at best, despite the phenomenal success of SF media and books. For example, someone wearing a Red Sox uniform on their way to Fenway Park is simply a member of "Red Sox Nation." Someone engaging in cosplay heading to a science fiction convention is a "nerd" or a "geek."
As to why I'm participating, I became acquainted with your project at the Watch City Steampunk Festival and was happy to join in.