I'm no fan of Machado but after 3 minutes or so of looking at the video and reading about what all happened this honestly seems pretty mild. Even if he did it on purpose and I would say that it very likely was, he knew the net was there and threw it into the net. I'd say it's had its intended effect.
Again, not a fan of Machado whatsoever but I don't find this to be that serious. If it had been the Brewers dugout I'd be pretty upset about it, things are more amplified when it happens to your team. As a more neutral observer I don't think it's that big an issue. For now, things could keep escalating and that wouldn't be a good thing (though it might be entertaining).