Twitter death 

When a person is deemed to be dead by the people of Twitter. This usually happens after they have been canceled for doing something wrong.

Person 1: Did you hear JK Rowling is a terf?
Person 2: Yea, I hope she enjoys Twitter death.
Person 3: As far as I'm concerned, Daniel Radcliffe wrote the Harry Potter books.

Twitter death by mr_candyman March 9, 2021

Twitter second death syndrome 

The phenomenon where people Tweet and comment about a celebritys death years afterwards as if it just happened.

Tweet: RIP Rue Mcclanahan. I loved you on the Golden Girls.
Reply: dude, she died 5 years ago.
Tweet: sorry. Twitter second death syndrome strikes again.

Twitter second death syndrome by coupondad7 July 13, 2015