Drew didn't make Gemini, at least not if "make" means started the project or came up with the idea. See also, the Gemini FAQ: https://gemini.circumlunar.space/docs/faq.gmi
I think he has been involved in the Gemini community at some level(?); I expect he's made a server and/or client, but lots of people have done that. Indeed, making the protocol simple enough for ~anyone to implement it is one of the goals of Gemini as far as I understand it.
