That thread has become an online event and obviously lost its original constructive purpose the moment the malicious intent became public. The commenters are not trying to alter history, it's leaving their mark in an historic moment. I mean the "lgtm" aged like milk and the emoji reactions are pretty funny commentary.

Honestly, it's harrasment at this point.

Feels almost like tampering with evidence at a crime scene

It’s just adding your initials on the tunnel someone famous just died in.

That’s absurd. Elaborate.