Yeah, 'cause there would be no internet rage over that.
This pattern has occurred across the property for ages when people choose the venue because they want to see/experience it, and then try to do it as cheaply as possible. Think Be Our Guest, Space 220, etc.. People choose the location and then claim they can't afford it, so they order the bare minimum they can find and camp on the table. Choose a different restaurant if you cannot afford it. Every restaurant has an assumption baked into their operating costs of the average revenue per table/ per hour, and the serving staff compensation (tips) is linked to that same number. Not to mention that many people suddenly taking up a table and just ordering dessert, do you send some of the kitchen staff home since nobody is buying dinner and you don't need to cook anything? A restaurant is a restaurant, not a dessert shop with drinks.
Everyone who tries to spend the bare minimum lowers the revenue of the restaurant and service staff, making operating the venue unprofitable. And if good servers cannot make a reasonable income for their hard work, they'll choose to work elsewhere. The restaurant still needs to be profitable, so it has to reduce staff, lower the quality of ingredients, or reduce the menu to manage costs to stay above water. This isn't unique to Disney; it's the basic math of running a restaurant.
Having said all that, I went to California Grill last Friday evening, and I can say that our meals were amazing, and the server was one of the best. We all chose a different combination of appetizer, entree and desert from the menu. She was absolutely fantastic- and she was tipped accordingly by our group of 4.
However, the one item I did hope they brought back was not there is the chocolate souffle they used to have many years ago. You had to order it when you placed your primary order but they were baked to order and brought to your table hot from the oven. I'll likely be monitoring the menu over this anniversay year to see if that come back and I'll definitely be there for that.