I only read the abstract of the study and blog post, so correct me if I am wrong, but I did not see one aspect addressed I have always assumed would have a large impact on c&r mortality: gear used. In particular for fly casters, light tippets and long fights. Going under gunned and landing a beast is good fun, a challenge and I enjoy it. I have been much more aware in the last few years though of my chances of hooking a beast and how I'm geared. The less time from hook set to net has to factor in here.
That said, I'm completely on board with the grip and grin (if you must) being wet and short. Clearly that effects outcomes.
I agree, that's why i say what I do on this topic. When it comes to trout, catch and release works. We don't need to micromanage eachother.I wonder about gear a lot as well. I wonder what is better/worse for the fish... Fishing a heavier rod and leader, landing the fish quickly, then taking a quick picture with the fish out of the water for say 20 seconds, or fishing a lighter rod/leader, fighting the fish substantially longer, but never taking them from the water and releasing them untouched with no picture.
Often I see people say things like "just release them. No need to stroke your ego with a picture" etc. But then I see these same people talk about targeting various fish using super light gear and I wonder what is really worse.