Would you like me to give you all the evidence to the contrary?
Of course only 5s can be scientists...Also that (the first sentence), and that instincts and tritype makes a type come off different and can give you the wrong result.
5 is a type that people almost always gets wrong in tests. Its always questions like "would you like to be a scientist" which obviously isnt exclusive to type 5 at all. So many people score high on 5 in tests that arent 5s or have 5s in tritype cause of it.
But aside from that, I don't think anyone answering "I hate science, knowledge, analysis, and intellect" every time it comes up would be a 5, using your example. Have fun continuing trying to change people's personalities. People can be cooler than you and your master, deal.
Also, concoct yourself a nice little rationalization for my highest score being on 8 and my having gotten no points at all on 9. Denial is more than a river in Minnesota. When I was younger, there was an argument among other people about whether I was an 8 or a 4. No other types were involved at all. Yes, enneagram is a lot more mainstream than you think it is.