There is absolutely nothing wrong in having BSSF, and in no way does this mean it is a challenge to BOSS (who it seems have thought so). Different Sikh groups have been around since Puraatan times, as long as they are not going against Gurmat ideas or Panthic norms, I see no reason why not to welcome BSSF as a new Sikh group, working for the benefit of Sikhs, like many before it (BOSS being just one of these).