Why is it such a big concern? As far as I know deep fake can be recognised with solid confidence using other neural net model? It's only a matter of time this w

Why is it such a big concern? As far as I know deep fake can be recognised with solid confidence using other neural net model? It's only a matter of time this will be detected in every kind of real-time communication app if it poses some kind of a threat and it is rising. Sure, it must be developed, and it's a good thing it is done in public, so the defenders can prepare to defend on open-source material, no?