The fatness range naming of e621 (see wiki of overweight) seems to be extremely unaligned with what is used everywhere in my country.
I am calling "overweight" what is designed as "Slightly chubby", "Obese" what is designed as "Overweight", "extremely Obese" what is designed as "Obese". And "morbidly obese" is for me something as mythical as siamese twins. Meaning that they are possible to exist but really a lot rarer than dwarfs. To point how unaligned the naming is, my sister already called my brother "Obese" for what e621 call "Slightly chubby".
I think that those name are those of an American standard (I know that it is an other world about fatness. Nothing compared to what action movies says about America.) Far from European standard, Asian standard or African standard.
This already came out in topic #30162.
I don't tag fatness because I don't want to see those things and they don't seem to be such a big part of posts compared to the rest. But don't be surprised if people tag things completely differently than what you except. Most of the world is unaligned with chosen naming. In japan, which I know to be a lot stricter about weight than my country, "Slightly chubby" will certainly be called "Obese".
I don't know if something should be done but I wanted to make the situation clearer.