lol Azir ult, cancer? It's such a lackluster move for an ultimate dude. It's like they built his whole kit, realized that if anyone gets on top of you when your E is down or you're out of soldiers you're fucked, so they gave him an "escape" for an ult. You have to be REALLY good with Azir for it to have a big impact. In most cases you'll see Azir just ult Yi away, only for him to spend 1/2 a second walking around it to kill you anyways. I honestly don't know why Azir seems to be so strong, I have NEVER had a problem with him, his weaknesses are GLARINGLY obvious, I straight up don't understand why he keeps getting nerfed. If you think his ult is broken, what about Janna? It performs a similar function, with a heal to boot. Why aren't you calling Janna ult cancer?
Typically Riot doesn't balance around LCS level games, they cater to the majority playerbase. But in Azir's case, it seems they're balancing around LCS level players. Riot seems to think every Azir player is capable of Azirsec, and that is so, so, SO not the case. If it's not that, then it's the prevalence of ranged junglers in the current meta. Therefore, they're balancing Azir to cater to the meta, something they promised not to do.
Either way, for the majority of the playerbase, Azir doesn't seem to be a problem, but Riot thinks it is, and is unfairly balancing Azir to the point that only Azir GODS will be able to make him good again. Seems there are bigger problems that should be addressed way before.
Until I see someone that isn't Faker 1v1 an ADC to death with Azir, it's all just bullshit.
That being said, I seriously doubt reducing his ult duration by 1 second will do anything to him. At all. He's in a similar boat Lee Sin was in, and he's going to wind up the same. Don't get too attached.