That argument would hold up,
if everyone in your party was fine with eating at different restaurants. At a food court, you choose your food, then all sit together. Somehow, I doubt WDW would be fine with everyone, except 1 per party, booking an ADR for themselves at each restaurant to get the meal of their choice, then carrying it to the restaurant where the last person had booked a table for the entire party size. After all, they supposedly have all those entrees to choose from.

Surely, they don't equate the park's table service restaurants to one big food court.

Then again, that would fall right in line with some of their other decisions in the F & B dept. lately.
Personally, I think WDW gets too many free passes from some, because they're serving theme park food. WDW is much more than a theme park. It's a vacation destination! Serving mediocre hamburgers & hotdogs is fine, if people only come for a few hours to ride the rides, then go home or to another destination. IMHO, the fact that they're a vacation destination means they should be committed to serving high enough quality food to somewhat match the price they're charging, as well as give their guests a pleasant dining experience during their stay. You won't hear me complaining about their hamburgers, hotdogs, etc., because the quality & price are in line with other amusement parks. However, with the decline the restaurants are seeing, they no longer offer the best quality food for the price charged in the amusement park industry.