Thank you for posting this. This is one of my biggest struggles and something which has constantly made me feel insane, because I've consistently dealt with other people acting like being unable to accept the reality of being chronically ill means that I'm not trying hard enough and I should be forcefully put through more useless and potentially damaging psychological interventions and drugs as a result of it.
Many years ago, when I got diagnosed with autism in high school, I was told bluntly that I had a developmental disability which could not be cured or mitigated in a significant way due to my age. Over time, I had to learn to accept this, but you would not believe the amount of people who think autistic behaviours are a choice or something you can subconsciously control.
I went through so much bullshit therapy (that ended up harming me worse) where I was berated for my odd body language and mannerisms, and was constantly forced to make eye contact or "be aware" of how weird I was. Of course, like you would expect, this didn't fix me in the slightest. Over time I have learned I just have to (unsuccessfully) attempt to hide that I have a disability in order to survive, which is a stark contrast to this false messaging about inclusion that's plastered everywhere nowadays.
When I developed CFS and chronic pain, I was met with this same nonsense from every corner about how I could control my "reactions" to my symptoms. While a lot of the scorn I've received has been from healthy and neurotypical people, it was shocking for me to constantly be put down or disbelieved in chronic illness communities of all places too. There are constant pissing contents of who has it worse, who is "faking" and the non-stop support of scam artists and snake oil salesmen offering thousand dollar mindfulness brain training courses to desperate sick people. Often times people don't even make an attempt to read your story and then just spout go to therapy again even when you've shouted a thousand times that you weren't helped by x y and z in the past, they'll reccomend it anyway.
When you have a chronic condition, whether it be considered physical or mental in the minds of others, it is hard enough to find support and understanding. It cuts deeper though when other sick people tell you that you aren't trying hard enough to get better or that you're not trying hard enough to be happy. Sometimes, there is no happiness, and I've accepted that for myself.