Yeah, that’s something I was considering mentioning earlier - though this chart is trying to be inclusive of as many types of mental health issues as possible, it is still biased towards those which produce a subjective feeling of distress.
Definitely keep in mind that, particularly if your brainweird is something other than an anxiety disorder or unipolar depression, you could be at “I need to go to an ER right now immediately” without being aware of any distress.
With bipolar disorder, for example, one can of course be manic and in great danger without being conscious of any distress. But also bipolar depression tends towards numbness, so as described above, you could not really notice being upset at all, but find that as you’re walking across the street you just don’t care enough to get out of the way of a car, or that it’s not worth the bother to eat… four days in a row.
With something like schizophrenia or schizoaffective disorder, you can get pretty deep into a delusion without recognizing significant distress, or get extremely confused and tangled up in your thoughts without realizing you should probably be concerned about that, or get to having hallucinations near-continuously without them being upsetting enough hallucinations to cause extreme distress, etcetera.
If you know your personal brainweird doesn’t quite fit with this scale, my suggestions are twofold:
One, focus more on the “functioning” aspects than the “distress” aspects. Are you not doing the things you normally do/need to do, for no obvious external reason?
Two, maybe consider revising a few entries to make your own personal scale. You could even jot down notes of specific warning signs for each level, like “I start feeling bugs, not just seeing them” or “I skip sleep entirely multiple nights in a row”. Specific notes like this can be especially helpful with disorders that, like, actively try to mislead you into thinking you’re fine. If you can see physically written down in front of you “if I am thinking this, or doing this, I myself have determined that means something is wrong,” it’s a lot harder to dismiss.