I found this replay on another side: http://pokemonshowdown.com/replay/ubers3416420
I think it summarizes both sides of the argument pretty nicely: if someone is serious about using OHKO moves they need to build an entire team based on them, which is for the most part made of terrible/unviable pokemon in ubers.
On the other side, such teams can be successful with good prediction skills and a bit of luck, but 6-0's are very unlikely to happen.
That replay is a terrible example. You don't have to build a team around OHKO mons to use them. In fact, the only thing I've noticed is that I've been replacing a phazing / attacking move on a wall / thing that gets multiple free turns and / or has high longevity. By doing such you now can threaten things with a OHKO and loose all your counters. All I did to make my team was take an old stall core, that conveniently happened to find the perfect role that Gliscor could fill while I was building it. Syrim took a team in need of a backbone and used Sp Def kyogre to fill that backbone. In that process he just threw Sheer Cold on it over Roar. Both of us didn't exactly "build" around an OHKO move user.
You can DEFINETLY build around a team spamming OHKO moves but don't expect yourself to get far unless you can get a ton of consistent luck wins. Keep in mind, all it takes is a single Sheer Cold miss for a [insert setup sweeper here, ex: Rayquaza] to set up a [insert setup move here, ex: Dragon Dance] and sweep. Thats a flaw that comes with teams using 6 mons with Sheer Cold, they lack a complete defensive backbone and as a result tend to succumb / suffer when their moves miss.
Your replay does however show a ton of hax. That is an argument against OHKO moves, do they disrupt the meta so much to the point where it becomes a dice roll? And to quote / paraphrase from Syrim.
Originally Posted by Fat Syrim
Is that a characteristic of a desirable metagame?
Any opinions / new topic?