Obesity is to health what nuclear is to the energy debate.
A political side that:
dislikes universal medicine
dislikes decent city planning
dislikes pollution controls
dislikes regulating food advertising
dislikes government health info
dislikes taxing externalities like sugar
dislikes regulating medicines
dislikes harm reduction strategies for addiction
dislikes wearing masks
I could continue...
really doesnt want to talk about those things that they are obviously and provably on the wrong side of. So they've convinced themselves that their political enemies are all saying "being clinically obese is politically correct" and therefore they can get really upset at them for the problem.
Problem is, this is mostly not true. Their political enemies want to stop bullying, and victim blaming and people having body image issues because they don't look like a airbrushed Barbie doll or GI Joe on steroids. Which is good.
Their take on that, presenting it as a threat to health, is just deflection, and while I'm sure they sucked in a few misinformed but well meaning people at first, it feels more and more desperate, more and more deliberate misdirection as time goes on.
We have the web. We have access to academic journals. If the average software dev chooses to be misinformed on these topics then they're no better than a flat earther.