Ya know, there are 2 points here(ok more than 2)
, single hooks and multi/trebble.
Trebbles - any time you have to go inside the mouth to unhook a fish it takes time. Now you have to handle the fish. My experience indicates there is little to no difference in release time. Lip hooked, just a little twist with needle nose pliers and the fish falls off. The above applies to barbed or barbless.
Single hooks, if hooked inside the mouth, again, you have to handle the fish. Pliers in twist and out comes the hook. Lip hooked fish can stay in the water. Just a little twist with needle nose pliers and the fish falls off.
The above applies to barbed or barbless.
Once again - little to no difference in release time or handling!
Therefore, no difference!
A feel good law!!!
A larger concern would be ......
ps I do pinch my barbs.