There's middle ground between saying Antonio Brown will wreck your chemistry, and saying that the Antonio Brown thing is nothing. It's clearly not nothing. It also not might be the worst thing ever.
The Packers have to consider whether Brown at a high salary is worth the risk of his antics that are progressively getting worse. And that is undeniable, they are getting worse. He's also a great talent. If he were on a cheap contract, this wouldn't even be a discussion, go get him, but he's not, so the risk is undoubtedly higher.
I'll say this. If we got him, and he got the ball, and we were winning, I think the players would be fine with his antics. Start losing...and there will be issues. Serious issues. Anybody acting like this is an easy decision when we have a first time HC, a GM who's been on the job for two years, and a practically new owner is crazy. We aren't the Patriots. We know BB could probably handle this. We don't know if LaFleur could. It's a big risk.