"I have a low metabolism" - obese people actually have a high 'metabolism', because moving all that extra weight takes a lot of energy
"Being overweight is not unhealthy" - weird then that they are having trouble getting pregnant and/or miscarriage regularly, need a machine to breathe at night lest their brain not receive enough oxygen, their knees and hips and eyes are that of someone several decades older, they're likely dependent upon insulin injections to live, and substantially more likely to develop cancer, etc.
Yes, there are a lot of negative attitudes towards obese patients in the medical community. That is partly because obese people think they know better than medical science, and are more interested in screaming about how they're being discriminated against thanks to the patriarchy and unrealistic beauty standards....than actually doing something about their weight...like accepting a referral to a nutritionist and accepting the advice to engage in more activity and weight-bearing exercise.
When someone needs a machine to breathe, artificial joint replacements, hourly/daily insulin, and Star Trek levels of intervention to reproduce, maybe they just need to shut the fuck up and lose weight.
You know what's really infuriating? Maintaining a healthy weight, getting exercise, making an effort to eat a balanced diet that hits lots of nutrients....and seeing these people cost my insurance company several orders of magnitude more money to keep alive than I do.