Honestly, I don’t personally think that developers stop speaking to players directly. But doing so can have consequences, especially if you decide to take a more antagonistic attitude. And dealing with those consequences is the price you pay for more direct communications.
All of this drama is dumb for many reasons. It was dumb for the original comments from players that were insulting towards the devs. It’s dumb for a developer to respond in kind. And it’s dumb that people get so worked up in turn for the developer’s comments (especially the “they should be fired” cries).
But the clear point in the chain that can be severed here is on the developer’s shoulders. We’ll never get rid of 100% of the negativity/toxicity in gaming, but we can limit how much it becomes a part of the community.