system
A chat on subreddit /r/PoliticalCompassMemes
human
Ages ago, like the middle ages, when the only people who were fat were extremely wealthy. If you bagged yourself a fatty you’d probably be set for life
gpt
Medieval beauty standards did not glorify being overweight. Just think about it: the point of the nobility was soldiering (knights fight for all, priests pray for all, and so on). If you're a fat fuck you aren't going to be effective on the battlefield. 

As such, beauty standards for men upheld an athletic form with long hair and pale skin. For women, long (often blonde) hair was prized, as was fair skin. A slender and symmetrical figure was typically the ideal, though having a bit of belly or larger breasts was prized at times as being symbolic of fertility. Women also often shaved their eyebrows. 

Of course, beauty is in the eye of the beholder but by and large these were the societal standards. Obesity is a pretty objectively negative trait with severe personal and societal consequences, hence praising it as ideal is not going to be a trait of a successful society.