Hello from Brisbane. This was an issue here that came to a head years ago (like, 15? 20?) and it was found that the printer makers could not void warranties or prevent their printers from working with non-OEM ink. Refills and those tank-pipe set-up became very popular. How this is only now being dealt with in the US?
FWIW, we don't have lemon car laws like you folks, where a full refund must be given if a certain number of faults occur. But we do have decent rules about things like warranties etc. It is seriously unexpected that this is a current issue over there.