... because some folk have no clue and still believe that (D) and (R) actually make some kind of difference?
It's kind of like those variety game shows where the participants wear helmets and are either on red team
team or blue team, jump through hoops over swimming pools and slippery surfaces, and get points for the team. No matter who wins, it makes no difference, they do you no good and you've just wasted an hour of your life watching it...