After all those months of testing, how can it be called incompetence at this point? They’ve been working on it nonstop for months now and have probably worked out innumerable bugs. However, no amount of testing can make it 100% ready-to-go; there’s always the slim chance that something will mess up at the last minute.
I’m not saying that the bug popped up 2 hours before, but you seem to be under the impression that Riot knew about the bug for weeks and put off fixing it when you have no evidence. How do you know this bug didn’t pop up only a few days if not the day of Clash? Could they have given us more of a heads-up? Definitely. There’s a good chance that they spent some time trying to fix it, hoping to sweep it under the rug before release. They should’ve at least told us that there was a bug and to have a plan B in case Clash got cancelled. However, the fact remains that there was nothing they could do to keep it on schedule. If there was, do you think we wouldn’t be having this conversation?
Imagine a you're going to a concert. The band is unable to show up because their vehicle breaks down. Do you blame the band? No. Of course you don't. They have the funds to finds a means of transportation that is reliable and will most likely get from point A to point B. So what happened? Bad luck.
Same thing here; they have the means to test things to near-perfection and did so, but unfortunately, they can never account for everything, no matter how hard they try. It's not any less frustrating, but you can't just project your anger onto Riot when it's not warranted.
Also, given how people are reacting and the content of my post, I would think it obvious that “want” is rhetorical, Einstein.