Indeed it's incredibly gay. Only Floyd nuthuggers use this term. When you say Pac is a great fighter you are immediately called a "Pactard".
Agreed. It's very similar to the Lewis v Tyson debates back in the day. Tyson fans were referred to as Tysonites. LL fans didn't really get a name but I do remember Kid Dynamite using 'Lewis Sluts' at one point.
They were pretty much impossible to avoid from the late 90s up until 2001, when Hopkins wiped the floor with him. After that, they gradually started to fall off.