I was hoping the accepted definition would not use humans as a baseline, rather that humans would be an (the) example of AGI.
If somebody claims "computers can't do X, hence they can't think". A valid counter argument is "humans can't do X either, but they can think."
It's not important for the rebuttal that we used humans. Just that there exists entities that don't have property X, but are able to think. This shows X is not required for our definition of "thinking".
Since there's not really a whole lot of unique examples of general intelligence out there, humans become a pretty straightforward way to compare.
No so unconventional in many cultures.
In this case, I was thinking of unusual beliefs like aliens creating humans or humans appearing abruptly from an external source such as through panspermia.