I agree with TaLaR. I would use other ships if I want to spam missiles (or fighters).
It's not about spamming missiles, it's about building a strong fleet that can plow through flanks and escorts but doesn't need to worry about cracking a capital front line. Then using the Gryphon to delete key ships in the enemy front line so the rest of your fleet can do its thing.
That is what (chained) Afflictor is for. As a flagship, cheaper and more reliable. Afflictor is so unfair, almost as much as Harbinger was last release.
As an AI ship, Gryphon (with Steady AI) stupidly approaches the enemy with the rest of my warships and becomes the first casualty every time. If it hung back with the carriers and lobbed missiles, it would be better. I do not want to dedicate a Cautious or Timid officer with warship only skills solely to patch AI problems for a single ship type. The only possible exception to that is if I get one early (by looting one from expedition or named bounty) and treat it like an extra large (disposable) Enforcer.
Piloting Gryphon is annoying. If it is not using Hammer Barrage or Cyclone Reaper, I rather pilot Apogee (or Conquest) with Expanded Missile Racks.
P.S. I cannot let AI Gryphons do as they please. I need to micromanage them so they do not wander to the front line on their own and let the enemy kill them. (I can generally let conventional warships do as they please because they have the stats to brawl at the front line.) I also do not want to pilot Gryphon if I have a better ship to pilot.