Catering: fancy vs plentiful

So many catering menus/photos especially for weddings seem to care more about fancy presentation than making sure guests are stuffed. No one should be drinking on an empty stomach and so many people say the food is the main thing they remember, why do caterers only want to advertise/serve half-bite appetizers and 2 bite entrees? No one is going to be happy or sated with that. Add alcohol and you have a hot mess. Why do many caterers feel like the food has to tiny, exotic, etc as opposed to familiar? Many "wedding" menus I've read are exotic spins on "comfort food" that the average person expecting a full plate would be disappointed with. Anything that is considered basic meat and potatoes (as an example) that people are familiar with is "not good enough or appropriate for a wedding". Who makes these rules anyway? Is it any wonder people stop at Jack in the Box on the way home when that is the extent of what many couples are given to serve. ?