I personally think some examples in the original post are being taken too literally and picked apart.
It sounds like you also have some emotional dysregulation and have tried to fit advice on this post, which is very niche and person specific, to your situation which is different.
I'd point out the big differences are using the words to clearly communicate the need.
In PD its actions, using very emotive words designed to cause a panic reaction in the other person, then once that perceived need is not met an escalation to make sure it is. The need can only be met in the way the person wants it to be.
OP has stated things like they said they turned blue as they didnt think they were taken seriously. This is why reactivity is not appropriate for this illness, because it is then learnt that someone gets attention if they tell staff they turn blue, so will do it in future and this becomes very unhelpful and dangerous.
In schizophrenia or bipolar it is, as this could indicate something else.
Let's be clear the post was not about them feeling distressed and seeking help. There is a wealth of information as to where to get help and support for various needs such as autism support. They asked AIBU, then posted about supported living. It was a resounding no, supported living is not appropriate.
OP hasn't had their needs met in the way they deemed appropriate, noone has said they dont have care needs, they have a care package.
What is very clearly missing to me is personal accountability. How is the OP taking steps to keep themselves safe.
Let's think of normal mood as a wave ~~~~~~~~~ not steady and constant. Dysregulation would be much greater than that. Smaller things can then cause emotional distress. Something that wouldnt ordinarily bother the same person who is regulated.
So, often with PD its about asking the healthcare professionals to do something or solve something, be the rescuer. But when that has been done and the need has not been met, the distress not reduced, there is then another focus.or the HCP is seen as the villain. For example if the OP was to have supported accommodation, they would realise this hasn't eased their distress as they perceived it would then identify something else which is wrong and someone else needs to fix. Again, the focus being on others solving things, others being the problem. Whereas asking what can I do to help myself is key. Personal responsibility and accountability, which every adult has to do.
Ultimately, a lot of people have explained about DBT where the focus is on distress tolerance, emotional regulation etc, which is important. This would help with their emotional distress.
Just because people aren't offering sympathy doesnt mean people aren't trying to help and support.
I would suggest anyone wanting support from healthcare professionals, the best way to communicate this is- I have noticed x, y, z, (reflection) I would like x, y, z (recovery goals) can you tell me what i should look into to achieve it (taking personal responsibility and accountability). Then going away doing it, coming back, I've done a,b,c thank you, either it helped or it didn't help because I found d, e, f (again more reflection and personal accountability). But removing, you need to, you haven't done this for me. Realistically its working with someone as opposed to accusing someone.
It is never about one action, it is always about a picture of what has been communicated, some via words, most via actions.