The 'terrorists' are we the people taking the fishes required habitat away. Torturing the runs into oblivion due to a thousand cuts. C&R, even when done mediocre (like the mcmillan example being held up on a pedestal), is not going to undo the habitat damage or fix anything. Sure it lets an individual fish keep on trucking with a piercing mark and less fat reserves, which overall is a good thing (the keep on trucking part), but it doesn't bring back runs or slow their decline.
I have been doing this game for almost 25 years now. Things don't always go as planned and sometimes C&R isn't pretty. Sometimes they are mortally wounded bleeding profusely. Sometimes they simply refuse to quit making for a really ugly hook removal (net or no net and cotton net bags are the last choice as they can and do scrape the slime coat right off leading to other issues). Any field sport which requires the intentional placing of a bent steel needle within millimeters of the circulatory system (puncturing leads to automatic death) and relishes the panicked flight response of the 'quarry', all against their will, pretty much sounds like a blood sport to me. A relatively tame one when it all goes right but blood sport it is.
Quite honestly I think this site and most others are nothing but an echo chamber. The number of folks on this site that intentionally or ignorantly over-play and mishandle fish is probably quite low. Meaning the message isn't going to have any impact. So to me it looks like a bully pulpit premise to begin with.
I disagree in part. I'd agree that it is a blood sport. I also agree that we as humans are the "terrorists" on the fish and the rivers. As a whole we as humans do a pretty good job exploiting our resources almost to the point of no return and sometimes to that point.
But I do think that those more knowledgable than myself who have spent their lives trying to do good for the fish have an obligation to share what they know. Whether or not it's on a forum, social media or any other means doesn't matter to me, the more the merrier. Today's internet, social media and web forums are yesterday's fishing magazines and books that a generation before me used to gain knowledge and where information was shared. I don't know if today's youth has ever broke the threshold of a library door. This is the future.
I also feel that while you point out a single fish would benefit from an angler who practiced proper catch and release it won't undue all the damage done by other means. If we maintain that way of thinking we are headed for failure for sure, but what if we all adhered to the principles John laid out, that single fish could become all fish touched by our dirty hands. That'll never happen but I'll take what I can get. I'd take a guess and say that you don't handle the fish today the same way you did 25 years ago? Maybe you do, but if you don't you likely changed your ways for the good of the fish.
Protecting the fish and it's resources is an uphill battle no doubt and I can be the most negative bastard you'd ever know, but there's hope. Progress is being made. Dams on the Rogue have come down, the Klamath may come down some day but I think the finest example of turning the tide and righting a wrong to what has been done to a river environmentally is the Elwah River. If it weren't for the internet and forums many wouldn't know of the work being done.
I'm sure all are aware of the work that was done there but here's a video anyway.
After Largest Dam Removal in U.S. History, This River Is Thriving
And a read on it.
River Revives After Largest Dam Removal in U.S. History
Is speypages or the internet going to change the world of fly fishing for Steelhead? No, but it in my opinion it's a pretty good way to share information and I'd bet more people on here are learning than you think.