"If you would throw it 3-2, throw it 2-2"

There is an axiom in baseball that says if you'd throw it 3-2, then you ought to throw it 2-2. The logic is the 2-2 count is the "make it happen" count. You don't want to run the risk of going full. So, if going to a full count is such a deterrent, don't throw a potential ball.

The logic is sound.

However, I don't think you can always say that you're 2-2 pitch should necessarily be your 3-2 pitch. If you have confidence in multiple pitches than obviously you could throw different pitches as the 3-2 pitch.

I do believe it is a prudent piece of advice for amatuer pitchers. It simply reinforces the importance placed on the 2-2 pitch.