Source: This is definitely SMBC, and I remember reading it on the site, but I have been unable to find the original comic. SMBC is famously hard to search; I found a few reposts that don't link back to the original, and nothing else.

a passively nodal intravenously networked nervous-system fleabag with a smile :)
anarch-esperantisto who enjoys various weird things, like film photography, ham radio, writing systems, and ancient operating systems (win2000 to OS/2 to UNIX),
and big cats!
blanket CW: im weird sorry
there might be kinks here!
also @degarf
Source: This is definitely SMBC, and I remember reading it on the site, but I have been unable to find the original comic. SMBC is famously hard to search; I found a few reposts that don't link back to the original, and nothing else.
may his troubled soul find peace where ever he may be~
I was able to find it: https://www.smbc-comics.com/comic/technical
I've had good luck with the spreadsheet in the past, but it has enough typos that sometimes it doesn't work. In this case, I tried "past tense" and got no results.