As we know dungeon meshi has always expressed the importance of food but I think this arc has really solidified that importance of communication in shaping a healthy lifestyle.
Regardless of cultural, religious or racial differences, if your group is neurodivergent, neurotypical, physically disabled or a mix. Whether you're made up of mainly straight, mainly queer etc communication is key to ensuring everyone's on an equal footing in any sort of relationship.
It's the same for at work, in friendships or romantic partnerships, it can all break down if you assume rather than check that you're on the same page.
Whenever we're watching Dungeon Meshi, my friend and I will yell "He has 3 adult estranged daughters!" whenever Chilchuck is being treated like a kid by the other characters. It has become a ritual.