Tsk, don't you know that on Hacker News everybody is assumed to have the same threat model as a 3-letter spy agency, and is required to behave accordingly?
That’s a terrible article. It includes nothing to backup the claims it makes- that printers have a plethora of vulnerabilities. The reality is your printer probably isn’t a realistic attack vector.
Your average network firewall will keep you safe, but certainly in theory physical access to the printer could serve as a gateway to the rest of the LAN, and certainly physical access in theory facilitates accessing recently-printed documents.
