Why is the resteem function disabled for this post?

https://steempeak.com/steemdev/@adept/will-steemit-complete-project-xanadu-s-vision-of-what-the-internet-should-be

I can resteem @adept steemitblog obituary, but not this post?

What gives?

@steempeak

The steemitblog post was featured in a joe rogan video.
Those were the days before the kneecappening.
https://dlike.io/post/@ocupation/joe-talking-about-steem