Yes casuals need the facade of a paper champ. I need the belt to be defended 3 times a year to even care.
If you need a belt (which must be defended 3 times a year) to "even care" you're even more casual than the fans you're deriding.
If two great fighters step into the cage for a fight I couldn't possibly care less if there's a piece of leather and metal on the line; I want to see the fight.
The "belt" that Jon Jones wears has little more meaning than the one they handed to Ronda Rousey at a press conference. Jon Jones is the best LHW because of who he's beaten, whether he has a belt or not.
When Jones or GSP face Anderson Silva there may or may not be a belt on the line - does your interest in the fight change either way based on it being a "title fight?"