Technically speaking the arcade cabinet could be done just by cutting the slots extra deep but they are not through slots so it was nice being able to get them the right depth. On the stool you can see in the first screenshot how accurate the rabbet is:
I also did a custom cabinet for a soda stream with a big CO2 tank underneath with slots in the butcher block top to hold the sides and having a consistent depth kept everything level but I don’t have pics of that.