Thanks for the explanation. Ironically this was the bit I didn’t know:

In modern times, USB keyboards are periodically actively polled instead.

I was thinking the implication was that some computer had faulty interrupt handling that would smash the status register or something.

Honestly I think I’m just too old to understand memes.

I feel like I should understand this, but I don’t.

They’ve been telling us this for 33 years, and still people don’t get it.