Pros and cons

Let’s start with the benefit of folding out a keyboard’s feet. It is important to distinguish between people who can type “blindly” and those who cannot do that and type with two fingers instead. For the latter, the benefit of folding out their keyboard's feet is that they can see the keys better. At the same time, there is a downside to folding out the feet. When you do so, you may bend your wrists too far backwards as you type. This posture is tiring and puts more strain on your wrist joints. The question therefore is whether the benefit of typing with your keyboard's feet folded out outweighs the downside of doing so. People who can type without looking at their keyboard do not need the feet all.