The token was introduced later on after the website introduced since Betfury is running here in the forum without the BFG token before then they just introduced it on the last quarter of 2021 IIRC. The token is just new while the Casino is more than years old. Betfury get a breakthrough when they successfully introduced there BFG tokens for profit sharing of the Casino.
I am not a member since the very beginning part of Betfury; became a member when they ran they big bounty campaign a while ago. But to my understanding the token already existed since they launched their website in november 2019. Before Betfury had 2 tokens and they merged everything to one token around 1 year ago.