This was my experience taking that survey as well. I am pretty comfortably cisgendered, but the test flagged me as agendered, with the #2 category being genderqueer. I am assuming this is because I answered several questions disagreeing with traditional gender identities (read: toxic masculinity) and not having to put much conscious thought into my expression of gender.

The test seems to count a number of items against being cisgendered that I really think should not be the case. Someone can disagree with traditional expressions of masculinity and still consider themselves male.