said, it's not useless it's just highly outclassed by all the other precision weapons that lap into the mid-range role. If only they had kept its’ pre-tuned Red-Reticle-Ranges it'd manage to serve a more practical niche role. That's why I continue to recommend to 343i that they use the Long-Barrel Recon variant as the available "default" H5BR within Arena & Social playlists. Unfortunately they haven't heeded my advice yet, but maybe someday.
Personally, I think the current regular Recon H5BR functions somewhat fine within the Warzone environment if you perceive it as a type of upgrade to the Assault Rifle via REQ progression. But, outside that very narrow role fit it really doesn't have a niche sandbox role within the vast majority of Ranked and Social Arena playlists given its' more direct precision weapon competition and function within those environments.