If this only said SELL their current printers, I could agree. I doubt that I will do that, unless something degrades further.
But I’m certain there will be no upgrades/purchases from large numbers of us. I can definitely say that for myself. And that’s not a “threat” or “talking trash” whatever else some call it. A threat is someone saying they intend to cause harm or damage; it’s not intended to help the target of the communication make a better decision or to convey useful information to them.
Communication is a good thing - it’s called consumer feedback and a market signal. Those comms are intended to convey useful information and help a business make a more informed decision. Usually companies are very interested when a customer decides to part ways with them.
So yeah, the “trash talk” will continue, if we insist on calling it that. But it should really be understood as consumer feedback with an intent to assist yet another company that’s about to shoot itself in the foot.