They will as zealots reward has greater effective range then adaptive fusions. When a rapid fire frame of an arctype has more effective range then its harder hitting longer range counter parts you can be sure it will catch a nerf. It just a matter of when. Even if you think fusions are fine that is a clear outlier. Likely a change to closing time, damn shame too. As the perk is not causing other weapons to perform outside their parameters, just making them feel for more snappy/clean.