Hi Adham,
I personally never liked to play people using frictionless rubber, especially if these can produce an unpredictable spin (and placement). It really can destroy the game and make it ugly to watch.
By banning this rubber, hopefully many players start using more predictable rubber, which will lead to a better, more straightforward table tennis. The game is difficult enough as it is with enough strange ways of playing to keep me busy
.
Best regards,
Harald