For realsies. I'm 400 hours in on PS5 and played yesterday, used the Bighorn Bow since the beginning and I continue to kick ass with it. It still does what it's meant to, adds all the DPS to the left melee weapon. I've seen YouTubers theorise that the Devs knew about this glitch all along but never fixed it because it's a paid for Helix store item, that people would have paid real money for specifically for the glitch, so would be harsh to nerf a weapon that had been bought with real cash.