Here is the post at Frontline Gaming.
OK, so they took a vote among those attending and got the results and acted upon it. What's wrong with that? Well nothing. As long as this doesn't cause a trend and other events pick up the nerf rule without a debate or votes of their own. Cherry picking rules to nerf is not fair to the community at large. Here they picked a rule that maybe 20 percent of the players will use. So when they ask the LVO attendees if it should be nerfed guess what happened? I believe, predictably, that those players not using Invisibility broke heavily in favor of nerfing it. And why not? That makes one less bump in the road towards victory for them.
And why Invisibility? Yes, when 7th broke it was argued that it was too powerful but reactions like that are to be expected when new rules hit. Honestly, I hear much less belly-aching about Invisibility these days than about Wave Serpents, come the apocalypse allies, powerful formations and Imperial Knights. As a Chaos player I can also tell you that it is Invisibility that helps Chaos stay somewhat competitive. I use it all the time and I still end up losing about half the time; invisible Flesh Hounds, while frustrating to opponents, are not game breaking. OK, so maybe that's not the best example, I'm not the greatest player. Still, can you recall the last time you heard an army using Invisibility winning a big tournament? Probably not, the Flying Circus's time has come and gone.
Eh, I don't enjoy writing posts like this, I'd rather write about something positive. So I'm just going to stop here. Obviously I am squarely in the camp that disagrees about what happened. I can just hope it doesn't influence the community at large. My point is this: you can't cherry pick what rules to nerf - it's not fair. So don't nerf, 40K has a way of fixing itself in due time.