In the requirements it says:
"The optional cloud - connected HP+ printing system requires an HP account, ongoing internet connection, and use of Original HP Ink Cartridges for the life of the printer."
etc
I don't buy inkjets anyway because they aren't worth it over color laser printers, but i will say trying to understand any of this seems hard at a glance.
Instant Ink is an optional subscription, which they plainly state, and that costs money.