You sure you aren't a being a titanic jerk right now? Even your username might be evidence that you're consumed by negativity, but that's beside the point. Why would you assume they're hallucinating that racism exists? Seriously: stop and ask yourself that question. Why side against this person who has done nothing but share their experiences?
I'm a white dude from the southeast and I have these stories: the only time I've gotten harassed by podunk shitheel cops is when I'm around Black and Latino friends, and when I had a truck with FIGHT RACISM written on the back. The only time I get followed around stores is with friends that just so happen to be darker than me - what a coincidence, eh? On the other end of the spectrum, I've had to put up with racist shit being shared with me out in the sticks from white folks who assumed I'm as racist as they are. Saying that folks are looking to be a victim makes you either complicit in or ignorant of racism that still exists in the here and now, and more than likely some of both.
TLDR: If you're not a troll, then all I have to say is bless your heart. Look inward and try to improve yourself.
If your eyeballs are missing, I can make an assumption that your vision isn't great just by looking at you. That's not a moral judgement.
Doesn't mean blood tests are useless, and in fact it means we have some idea where to start investigating a potential health problem.
Yes, I agree that there's bias against folks who are overweight, and also that there's a range of risk associated with being overweight. It's pretty clear, however, that obesity is a health concern that we should take seriously. If someone smokes five pack of cigs a day, I'm going to make an assumption about their lung health. There's always outliers that live to 100 smoking and not doing exercise, but it would be a shit doctor if they didn't tell folks not to follow their example.