Because they promote unity above all. They don't care that the leadership of BE is evil. They only care about their actions, if they do good things like make Pollard rallies, then Yukutiel supports them. Most of the NY members of BE that post on Kahane.org are just young Kahanists our age or younger trying to do the right thing. They were giving out Kahanist literature from Kahane.org telling people to join Yukutiel's dog program to defend Jews, what's so bad about that?
JTF doesn't like these misguided people since the leadership of BE has evil people so that somehow makes these kids evil somehow, but to be honest I met some of them and they are nice young Kahanists.