Were that the case, there never would have been a ban on King's Rock. However, it's generally agreed that it's better for a metagame to reward skilled play, and not the whims of
xorshift128+ (the current method of pseudorandom number generation). Hence,
was banned.
So yes, we CAN ban things for being wildly uncompetitive. In my mind, Sneasler is an even worse offender than
because it's an extremely viable mon with a great deal of usage. How many ladder games do you think have been decided by Dire Claw's randomness since Sneasler was first introduced? And is this something we should tolerate in National Dex?