For a person with a multi-word name, you have to put quotation marks around their name to @ them. But only straight quotes will work, curly quotes don't. This results in failed mentions, especially on iOS, where quotes are made curly automatically.
For example: @Fruit Fucker 2000
works. but @“Fruit
Fucker 2000” doesn't
(My last report for a while, I promise!)
“‘I don’t want Trump to be president,’ [Tara] Reade told Vox. But...she won’t be voting for Biden. ‘If he’s my president, I just can’t fathom it.’ – Vox