Admittedly, the printing system for 2D Printers is a nightmare. Windows Secured Core PCs, for example, disable all 3rd party printing drivers and only support open driverless standards for printing like Mopria. According to people who have looked at it, let’s just say CUPS in macOS and Linux is not very likely to be a paragon of security, having an RCE scare 3 months ago.

If the printing stacks within operating systems are trash, who knows what horrors your network-connected printer firmware has. (Locking down 3rd party ink cartridges in the name of security - what’s an ink cartridge going to do? Buffer overflow the data it sends to the printer? Oh wait, maybe the printer is that dumb and we’re overthinking this, and it’s more inexcusable than first glance suggests.)