pull

I recently obtained my SFGI. However, I've been formally training with kettlebells for less than 1 year (informally much longer). Since, I started training seriously, I haven't been clear on the definition of a kettlebell "pull." Obviously, there are movements, e.g., the press, that fall outside...

I was wondering if doing both, horizontal and vertical pulling and pushing movements is necessary? Some coaches claim that you should balance horizontal push exercises (push up) with horizontal pull (inverted row) and vertical pull (chin ups) supplemented with vertical push (handstand push up)...