We are not helping ourselves here.
In the past we would take such to a shop or have our IT staffer come over to try such out. Today folk want a correct diagnosis without letting a tech see the bad devices and will lash out at anyone that helps or tries to help.
We brought this on ourselves with the lower costs. You can get a printer for 99 bucks so why is there any doubt it's not the Apple/PC at issue here? Did they find local support?