Humans is the most general intelligence we know about, so that is why we called it general intelligence, because we have made so many intelligences that are specialized on a specific domain like calculators or chess engines we need a word for something that is as general as humans, because being able to replace humans is a very important goal.

Yes, humans are the most general intelligence we know about. That doesn't say much about how general it is, just highlights our limitations.

This is a bit like saying Earth isn't big, because there are far larger planets etc. out there. For the average conversation, Earth is "big".

"AGI" means many different things to many different people: to me any AI which is general is an AGI so GPT-3.5 counts; to OpenAI it has to be economically transformative to count; to some commentators here it has to be superhuman to count.

I think that none of the initials are boolean; things can be degrees of artificial, degrees of general, and degrees of intelligent.

I think most would assert that humans count as a "general" intelligence, even if they disagree about most of the other things I've put in this comment.