This isn't an easter egg, nor a comment in the code. It's dab smack in the manual. Could distract or confuse someone just trying to look up a function. I say we keep the fun expression stuff in places where it won't get in the user's way of doing their job.
Jokes may be fun to write. But when you're scouring a manual for a needed function, and you're confronted with a smarmy joke, it probably won't be as fun (especially if you're reading the manual to troubleshoot something.)
It broke up the relative monotony of otherwise dry technical information. It has a similar effect when placed in code. In addition many companies used it as a form branding - "Hey we're not stuffy old IBM! We're Cool!".
Back then manuals were also far more important, you couldn't operate the machine at all without one. Yet the jokes never managed to stop people from getting the information they needed.
I think the real difference when it comes to manuals is most modern ones are not comprehensive. I could see being upset if there was a joke but no information on my actual problem.
It's in a separate box at the end of the manual for that function. It's generally like a footnote. It being there shouldn't distract or hurt you in any way.
