@unseenjapan From the sounds of it, it's not a very organic concern but one likely imported from another country.
Quite a bit of it is really just traditionalists in the U.S. trying to be provocative.
https://nichegamer.com/matt-walsh-attacks-anime-again-obese/ It's worth mentioning that this guy started doing this after coming under fire for supposedly defending abuse.
https://reason.com/2022/04/09/the-new-campaign-for-a-sex-free-internet/ These folks have appeared all over the world and basically just try to rebrand "morality" as "exploitation". They go looking for very petty things.
Also https://www.buzzfeed.com/ishmaeldaro/the-baron-nsclrp She's known to be very misleading, more on trans matters.