Well I've said that for years. It makes no sense to me to ban a subpar ability (Seriously, if you had the choice of any ability on every mon would you really pick Sand Veil?), it's just the usual scrub whining about "hax" because for some reason people can't seem to wrap their head about Pokémon being a game of probabilities and not absolutes. Sand Veil literally does nothing on its own, so why are we effectively banning Cacturne and not, oh, Tyranitar which not only enables the abuse of Sand Veil but is also borderline oppressively good in its own right? At the least, a complex ban both allows viable usage of the "problem" mons (more applicable to future gens, where the evasion mons are better, but Cacturne has a unique typing and niche uses too) and is in-line with the way Smogon handled Swift Swim and friends in the past. I like it better that way anyway, because it opens the door for people to cover team weaknesses with niche choices like Cacturne vs Sand, Kingdra vs Rain, without totally removing them from play even when not intentionally abusing their abilities.
The better player doesn't always win, they simply win more often. That's true even when you throw out the more conscious decisions to roll the dice (abusing Evasion abilities or Brightpowder, using more powerful but less accurate attacs, etc.) because random status still exists, crits are a thing, and so on. Not that I'm a big Gen 3 guy, the choice either way doesn't impact me much so feel free to ignore my opinion, but the idea of banning Sand Veil is scrub talk. Yes, you will sometimes lose games to it and it'll piss you off and it sucks but it'll be more than made up for by the games you win because your opponent is using Cacturne! That's how statistics work!
Once you acknowledge that basic fact, you learn to control your emotions when you do get haxed out of an otherwise likely win. It's fine, you should win the next one. Maybe you get haxed out of a tournament early, but the majority of players won't and eventually the tournament winner will probably be someone who didn't rely on an inferior strategy. There is no need to ban these strategies as they self-select themselves out of the competitive metagame, either as players stop using them or those players lose more often and rarely find themselves topping the ladder or deep in tourney brackets.
Evasion abilities are bad because they require a secondary enabler to literally work at all; moves are another matter. Brightpowder is bad (and Quick Claw too) and I'm glad that ban was eventually reversed. -_- And boy oh boy, the future Swagger ban makes me want to puke. (Literally banning confusion, except Swagger isn't even the best move in its class... just the most accessible.) But hey, the prevailing ban-happy attitude is exactly why I don't play current-gen OU anymore. :/