You said unloaded with receivers locked back was no different than looking down the barrel while cleaning it. You didn't say anything about it being broken down. You're right, there's no risk looking down the barrel of a broken down firearm. But looking down the barrel of a supposedly unloaded weapon leads to deaths every year. I don't know how they manage to misjudge the condition of the firearm, I just know the statistics.

So to clarify, you (people) shouldn't look down the barrel of an assembled rifle unless they're positive that the rifle is unloaded and in a safe state. People make mistakes, which is why we have rules for firearms such as "always assume the firearm is loaded, and never point the barrel at anything you don't intend to destroy". The shooting club I'm a member of would definitely take issue with the positioning of these rifles.

Ultimately I think you and I just had a minor misunderstanding due to the brievity of your initial statement. Cheers.