Took a look at the test, just a consideration:

After a period of instability, I need a quiet and predictable environment.

I need a quiet and predictable environment for me to switch from one task to another easily.

I often struggle to concentrate in busy and/or unpredictable environments.

The very same physical person, same neurology and genetics, taking this test after having lived 10 years in the countryside working crops, will respond differently than after having lived 10 years in a noisy city working in a cramped office, because they will have different frameworks of what constitutes "quiet", "busy" and "predictable". Change the variables, and plenty of questions in the questionnaire will have the same issue. To use anoter example, this question:

I rarely find simultaneously holding eye contact and making a verbal conversation with another person uncomfortable.

When asked to autistic people, tends to have different answers depending on whether they have a SO or not.

You shouldn't use the test as an objective, scientific measure of "this is how monotropic/autistic I am", but rather as a space of self-reflection to evaluate how well you're "working" (in terms of rest, leisure, productivity, socialization) in your current environment, and wonder if you should seek changes to better enjoy your life, such as seeking in-doors social activities (such as roleplaying games) rather than restaurants for socialization, or request accomodations at work (such as specific periods of time when you're allowed to focus on your job undisturbed).