Authorities swoop on Chinese restaurant that challenged customers to eat 108 dumplings
https://edition.cnn.com/2023/07/08/china/china-eating-contest-investigation-intl-hnk/index.html
If this kind of the opinion is escalated, all-you-can-eat style restaurants can be get backlash. (Ironically, there are many Chinese all-you-can-eat style restaurant in the US.) I think that food waste means to discard foods excessively. So, just serving a lot and eating a lot do not mean food waste.