This is a very simplistic way to look at people. A lot of people are misinformed or not thoughtful or don't fully understand your experience or frankly not that bright. The idea that people who genuinely care never do any damage is beyond ludicrous.
People who actually care will be okay with being told "This isn't helping. Please just stop." But that's not what the vast majority of people do.
The vast majority of people want it acknowledged that they are good people because they care about you and are trying to help and all this shit.
If they cared, they would drop it when asked instead of doubling down on trying to demand that you make them feel like a good person for fucking with your life and trampling your boundaries.
I also have a serious condition. No, most people absolutely do not actually care about my welfare.
I have tons of firsthand experience with this and I'm not budging one inch.
See it in kids constantly, adults often.
Kids getting mad at the cat for not liking being dressed in doll clothes.
Yes you care about the cat. However now everyone including the cat is unhappy.
Childish behavior, except it still hurts when loved ones get mad at you for not recovering fast enough.
Parents offered me some pills (blood thinners) that might solve some problems.
They got very upset when I refused without a doctors consent.
Only thing I wanted from them was emotional support. Instead I had go cut them off for a year.
All because they couldn’t fix me.