I bought an HP in March 2020 when my job went remote and HP bricked it remotely after only 100 pages because I wouldn't sign up for their subscription program. Ended up trashing a perfectly good printer.
Luckily my library's close by and I can print there remotely.
All hp printheads are "refillable". The problem is that the printhead itself is not designed to last more than a refill.
HP doesn't sell those standalone, all the generic refillable cartridges compatible with HP are hand picked from e-waste in some third world country, then cleaned, primed and sold as "new"