'they are butthurt'
If this predictable insult was directed at me. I'm not butthurt about who won them nor am I going to bestow the title of greatest onto someone with a winning 12% against his main rival in majors.
'everyone says it.'
Oh well it must be the absolute truth. Billions of people have faith in religion, it doesn't mean it's anything but fairytales for adults.
'Is there an official trophy for it?'
You tell me, you're the one who stated - 'Federer got the GOAT title.'