This is what desperation looks like. Nothing they can do will reverse the trend--its bigger than a single company. HP has its numbers to hit.. but are completely powerless to make it grow. So they do things like this, trying to slow the decline for themselves personally... but push more consumers away, accelerating the trend and the decline of their business.
I think the model is starting to show its cracks.. the old model was: buy a printer at a discount, pay us for ink. But if consumers are printing less, they're buying less ink, making it even harder to get back that printer discount. So HP needs to squeeze all of the ink sales out of the consumer they can... maybe if they can push out 3rd party ink, they can delay changing the business model for a little bit longer. But thats going to get harder every single year (if its even realistic).
I've owned lots of printers over the years, including a few HPs... I currently own 0 printers. And dealing with stuff like this is a small part why, but the bigger reason is: dont need a printer.