The Minecraft snapshot 24w12a article mentions is_meat for allowing food to be given to wolves. However, the field being set to true doesn't seem to affect whether a wolf can eat an item stack, and code analysis indicates that is_meat doesn't exist at all; the functionality is instead tied to the minecraft:wolf_food item tag.

Note that minecraft:wolf_food is also briefly mentioned in the article within the list of added tags. Did Mojang mean to migrate from a tag to a component or a component to a tag? Were both implemented separately and one was simply merged over the other? In conclusion: did Mojang forgor?