Humor is okay, but we're here to solve problems
Well, it's one thing to slip in a casual, yet related, joke to a question about a real, actual programming problem that you're facing, but if the sole purpose of the post is simply to get a rise out of people, then this just isn't the place for that.
I use Stack Overflow a lot in my work. When I land on a Stack Overflow post from a Google search, I can quickly determine in a matter of seconds or minutes if the answers will solve my problem or if I should move on. The lack of noise makes this possible. The conciseness of the posts allow me to ask myself two questions:
- Is this problem similar to the one that I'm facing?
- If so, do any of the answers sound like something I should try?
Forums, on the other hand, are analogous to wandering around in a dark, endless maze, desperately trying to find your way from point A to B, only to come to a dead end after fumbling around in the dark hoping to find an answer. The jokes aren't so funny when you're focused on an end result and run into a lot of nonsense.
You can't focus on solving problems if there are too many distractions.
Think of SO like your job
I think of Stack Overflow like I do my workplace. Sure, we occasionally joke around at work, but the sole reason we're there isn't to goof off. We're there to do a job. Likewise, on Stack Overflow, any post you create should align with the goal of helping future visitors solve a specific problem. If the post doesn't do that, then it simply doesn't belong.
To be clear, the post you referenced was off-topic and useless, perhaps to the point where it should be flagged as "very low quality" and deleted. However, had it been a programming problem about creating video editing software, and the author was stuck on a specific problem related to codec issues or C memory management, then perhaps a bit of humor would have been acceptable.
Remember, if Stack Overflow turns into the type of place where people are searching it just to read jokes, then it has failed in its mission. On Stack Overflow, the humor can't be the goal. The purpose of searching Stack Overflow should always be to learn. If you laugh along the way, so be it, but that's not why we're here. If we want to waste time on non-constructive activities, we have Facebook for that sort of stuff. ;)