Just a few benefits, the target audience is anyone who doesn't want to pay the full price of a printer to replace ink or support a locked-in infrastrucure.

You can refill the cartridges rather than replace so you're only reliant on HP for initial purchase then replacing broken parts.

Ink replacement cost: $10-20 vs $40-100+. You also won't need to replace all three color cartridges when one goes bad

Not getting locked into software requirements: A printer shouldn't require a ~350mb start on boot backgtound app to have a driver on your system.

Lower likelihood of fingerprinting: some printers can be identified by their print pattern. Not as much a concern for the everyday user i admit but less is better even if it's cookie recipes. ...Especially if its cookie recipes 😬