Wow... Long and funny. That guy has fantasy.

That was amazing. I applaud that guy. Many times.

Why post an animation that isn't made by you?

Yeah... this animation is several years old. But still pretty creative, can't believe its length and originality.

to be inspiring to the animation community.

If it was inspiring, you would make something, and post it.
Obviously you did it because you can't do it yourself.