Reporting on the Paris terror attacks isn't reporting on what "someone said"
Of course it's the same. How is asking eyewitnesses what they have seen, including reporting the Tweets of eyewitnesses, while clearly showing that they are Tweets from the scene, not reporting on what someone said?
How are these people not sources Buckinbronco?
When journalists arrived at the scene they continued to gather the evidence from eyewitnesses and were able to give their own eyewitness accounts. Again, sources.
The alternative to reporting on what people said who were there when you weren't, is making it up. Who wants that?
When you're talking about 'every article ending: 'in the queue at Tesco, Mrs White said...' I agree that's pointless. I don't often see it in body copy, particularly not in a report such as the Paris attacks, there's too much other stuff to put in. Perhaps they turn up in the online comments section, but that's different. Why should Mrs Smith or Mr White be prevented from expressing their opinion as long as it isn't offensive?
I disagree it wouldn't have happened 20 years ago. Some of my colleagues used to do things like that 30 years ago. It was because they had no news sense. Normally they'd get knocked out by subs and news editors who did.