I always felt bad for the devs of the actual Fortnite game. Its clear lots of time and resources were poured into what was actually a pretty good horde style survival/crafting game, then the little BR offshoot came along and now whenever someone says "Fortnite" I just assume they mean BR because no one actually plays the survival game.
I guess they can't complain about the success but it would have to feel at least a little bit demoralizing.