Wait, kinda confuse..I always thought bitcointalk was created during bitcoin development so technically bitcoin is official coin of bitcointalk so why the need of creating bitcointalk token/coin when we already have one?!
You're right.
Bitcointalk is not backed or fueled by any token or coin.
Yes, it is part of the bitcoin development and was launched to grow and create a community of people interested in bitcoin's development.
OP is suggesting a coin with practical uses o. This platform, or maybe integrate bitcoins into the system, well considering that BTC is used to pay for evil IP, buy copper membership, make donations if is in a way the tokens coin.