I think it's all about the definition of hostile:
- In the eyes of RBL they are hostile if they see "hostile relations" (one way) in the politics/relations tab.
- In the eyes of Bad GFs (and Elit) a hostile constitutes "hostile relations" (both ways)
I think it has been clearly established in numerous threads that one-way traffic is not a hostile.
Most recent occurences that I recall:
- CR waving PyroManiaCs OOP+7 while PyroManiaCs had 1 way hostile
- Settlers waving PyroManiaCs while PyroManiaCs had 1 way hostile
Both times the people on the bandwagon said "tough luck, got caught pants-down". If these two situations were "hostile", meaning ethics say no hitting in, I think we should call on the FPA again to police :)
In short: 1 way traffic = farming and 2 way traffic = hostile.
Bad GFs had no reason not to wave.