I guess I just selected a lot that have a dress code, i think 3 of the 4 I'm going to. My entire point about the dress code was that it is not like they want you to dress well, the way they have it described I could wear the most banal clothing and adhere to the code, but many stylish outfits would not be in line with rules. The reason they do this is obvious, some people are totally unable to understand what is acceptable and what is not but instead of having an objective standard applied depending on what is worn they lay down rules that allow for outfits that are ..... just not good.
I snicker to myself when I see men walking around with their khakis on, their polo shirts with their company name on it and their cell phones hanging off their pants, on display for who knows why instead of in their pocket and this passes. This is acceptable under Disney's business casual. People wear that because its comfortable, its much like someone wearing a pair of sweats and sports jersey. It is not a nice outfit. It's tacky, yet I don't find it offensive in any way so I dont care if people dine wearing that. If someone is so superficial that their dining experience is lessened by someone elses attire, assuming the attire is not offensive (tank tops, wife beaters, flip flops with bear feet showing and so on) then I wonder how much enjoyment they get out of most experiences anyways, there are a lot more important things to worry about then what others are wearing. I take pride in looking good when I go out, and If I'm somewhere and see someone else under dressed, it doesn't bother me in the slightest.
Most of the restaurants that are asking for business casual are not five star, V&A is the exception and at that level of dining it is appropriate as people are going for the experience and to feel special. Patrons may go and be totally dressed up and feel in place. The rest though, most of them if they existed outside of WDW would rate as a notch above a family restaurant and would simply be unable to demand a dress code.