Dealing with a loved one or close friend with dementia is extremely draining and it's completely OK to acknowledge that.
Your barking at everyone "educate yourself!" just reminds me of all the conspiracy nutters during COVID - it really doesn't help your cause.
My wonderful mother was bipolar and sectioned many times from when I was 8. There were several incidents of police involvement due to extreme manic episodes.
I lived with "trauma" from those early experiences and did get "triggered" by things as an adult, but those are words kept between me and my psychotherapist.
I have never had a lot of money, but I paid £75 a session for EMDR and threw myself into it. It was life changing.
I am a very empathetic person, sometimes too much so, so I can't carry the burden of someone else's misery if all they do is wallow for years on end.
I have a few friends with mental health issues and I've seen them get help (which IS available) and work to overcome them, with varying degrees of success. I will always be there for them.
One friend, however, sounds like @Jollyjupiter's and has spent decades wallowing in her anxiety and I have to limit the time I spend with her. She throws hundreds of pounds at gadgets and snake oils but thinks GPs and Therapy are for idiots. She can be very draining.
Don't tell me to educate myself, and if you want to know what happened to #bekind, it disappeared up its own arse, closely followed by anyone who can't cope with reality.