Most would disagree. I think it's easy to take for granted how much work, experience, and knowledge goes into being able to use a computer at all.

Maybe parent commenter should root-cause why they think it's Monday first

Probably because they, unlike you, are able to read comment datestamps?

EDIT: this is fascinating. On web, their comment shows as 1 hour ago. But on my mobile app, their comment shows as 3 days ago. Looks like the HN mods second-chanced this article, and it edited all the old comment timestamps as a result?

Maybe we're all just having a case of the mondays

The behavior does match what I've seen in articles which have been second chanced.

Gotta be some bug because I've seen a thread 4 days ago on mobile that was yesterday shown as new on desktop with comments that I clearly read already dated also as new, posted within hour.