Their customers no longer want to drink fizzy, watery, tasteless, yellow crap and they don't like it. They have to resort to insults and it looks like they're running scared.
When they take over a craft brewery they close it down, move production to one of their factories, change the recipe and ruin the beer.
Fortunately, there's plenty of decent beer for sale nowadays so there's no need to drink their crap. You can even brew your own.