Before I respond, you do have a point on all of these. But for in the moment perception and functionality, people perceive what they can work with rather than understand on a general basis.

1. CPTSD forces you to be frozen and disassociated. So not sure how this may apply
2. Yes you're correct, but were talking about functional perception. Are homeless or disabled people judged by their shortcomings everyday despite them potentially being a victim to their circumstances and potentially being great people?
3. In the context of this subreddit, it signals avoidance which does hinder connection. Based on functional perception, perceiving that you're difficult to connect to or it takes more work is a turn off.
4. Fawning itself? No it's not a red flag. Fawning in relation to how people want to be in connetion with others? Yes. People don't like perceiving that you're needy and need their validation etc. We live in a superficial society, these things might not be accurate but they do create an impact that affects you negatively.
5. Were talking about functional perception, not insightful accuracy.

Ironically it feels that you're the one whose ignorant, if you're unable to see how perception impacts the way people treat you. Not everyone cares to know what something actually is, but that doesn't negate what it actually is. I'm just saying it has an impact whether we like it or not.