This sounds pretty rude FYI, I actually ended up asking effectively the same thing, you can look at my comment to see an example of how to phrase it more politely
I didn't find it rude at all. The comment that presented the link was pure click-bait. I prefer it when a brief explanation accompanies a link, especially when the link points to a 3 hour long video, as in this case. The YouTube teaser says "explores the workings of the human mind, intelligence, consciousness, life on Earth, and the possibly-simulated fabric of our universe". I certainly agree that the topic sounds interesting.
I didn't know anything about the topic before I clicked the link. Nothing in the comment that introduced the link revealed anything about the topic. And I only clicked the link because I was intrigued by the discussion here about rudeness. I was not motivated to click by the suggestion that watching would be worth my time (without any further details). That I found the topic interesting-sounding came after I swallowed the bait and clicked. Such things happen sometimes. And I still don't know if it actually is interesting, I won't actually know until I have set aside 3 hours to watch the video.
Well... I consider that posting a bare link with no description to be rude. The poster doesn't take the time to tell us anything (or, in this case, anything useful), while expecting us to take the time to go find out what it is. But there's one poster and maybe thousands of readers. To waste thousands of peoples' time to save your own is... let's say it's not very polite.
So, coming from that perspective, I am inclined to respond, um, less politely than you did. But I suppose than dang would encourage me to be better than the person I'm replying to, rather than just like them...