I got into an "argument" about this exact thing with a new sjw co-worker this last week. He was babbling about some shit he heard on NPR about "diets don't work" and it's impossible to lose weight, and I'd already spent a good 40 hours of the week listen to him prattle on about whatever "problematic" shit he'd heard/seen and I just lost my ability to ignore it and said, "people fail at eating like humans, it's not 'dieting', it's people thinking of changing how they eat as 'a diet' and not 'this is how i eat for the rest of my life'". He sassed back, "oh okay, so I guess you're right and ALL the doctors who said that don't know anything." I asked him if the "doctors" got their PhDs from Yum! brands University. He got really quiet and didn't talk to me for the rest of the day, so it was a win-win.