a wild stab in the dark , but its so that people don't just see a FTR freeroll in a poker site lobby and think "I'll have a piece of that " and come to the site and have a stab at some free money.
You could prove that that is not your intention i guess by offering to add maybe 500$ to the prize pool if they let you play.
ALternatively you could just join in and try and learn from what the experienced players (thats not me by the way) can teach you and from other peoples questions .