Andy M.
Certified Pretend Chef
When I make a gumbo I go all out and brown the fat in oil.
But to keep the daily calorie and fat content down using water in the gravy works.
Browning a bunch of flour ahead of time and using it when needed is a big time saver. It is up to the person doing the cooking if they want to use fat or just water.
I have no issue with what you just said. My only point is that a roux has to be fat+flour. Using flour and water to thicken is fine. I do it all the time. I just don't think it should be called a roux.