Well, there is nothing right or wrong. Everyone has their own ideologies to hold and choices to make. We are free to act according to our own ideologies and understanding.

For now, I've muted these accounts as I won't like to support this stance. At least, she should update about these rules on the Community description so that people are aware of it before joining them. Only Amazing Drinks community has mentioned about the 3 photos posting rule.

Secondly, you can use FoodiesBeeHive tribe (not community) at https://foodiesunite.net/ to make your posts in that tribe which will also earn you FOODIE token as posting rewards.

Have a good time!