Now that you mention it, the scream in that clip is similar but a bit different. Good catch.
The main point I was trying to make was that the person getting knocked off and falling is the person who made it popular. Personally, I hate the Wilhelm scream. It's way over used and really doesn't add anything to the scene it's in.
Mid-50's.
Was looking for an alternative to Reddit, probably like a lot of other people, and Lemmy popped up as the first choice. It's really as simple as that.