Seems like a made up interaction tbh. When would you just say “my trs80 had 4k” without specifics 4k of what unless the other person first said something like “my first computer only had 8MB of RAM” in which case they know from context you’re talking about memory, or you out of nowhere say “my trs80 had 4k” to someone and they have no idea what you’re talking about and ask if you mean the monitor.
I assure you it is not made up. Obviously it's not the literal words I used, I'm working from personal recall, not notes. It would have been part of a larger conversation I was having. From memory it was part of my answer to the question "how long have you been programming?"
Admittedly didn't register with me at first but this is hilarious.