Not to be condescending, but can you clean up your grammar a bit? As for what I think you are referring to is the hammer action on your piano, poor action would greatly affect your ability to play classical music effectively and accurately.
For other genres, I have read how musicians would learn to play with what ever state an instrument was in since it was all that was available. This would give a good learning curve and exercise tool for perfecting the art and technique of playing. Once the musician moved on to better made instruments (due to economics, or otherwise), their technique was mastered and playing ability was much, much easier. So there are some pros and cons, but I don't think this scenario would apply to piano.
Kind regards,
Living Room Rocker