The players i come across who cheese the most on ladder are usually random players.
But i dont think it gives an unfair advantage, you find out what race your opponent is within the first few minutes anyway, although this can disadvantage some playstyles where a fast expo is almost essential.
Regardless you should have a build that you use against a random player that is safe enough regardless of what race they spawn as.
I just hate playing TvP agains randoms. I hate dealing with void ray all-ins when you are forced to wall off because you don't know the race. And every single random that gets protoss on ladder seems to blindly proxy a stargate somewhere on the map.
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