On the Warrior of Light front, I think all of this confusion is built up because there are multiple definitions for it within the game itself.
At the start of the MSQ, the term 'Warrior of Light' was just for "Person who fought at Carteneau and then mysteriously vanished, while also being impossible to remember." As the Adventurer Guild NPCs tell us, trying to remember them was like seeing their 'silhouette against the glare of the sun' -- that's how the name "Warriors of Light" stuck. ArmachiA is right in that there is no proof either way stating whether or not every single person who was affected by the time-skip spell was a person with Echo or if they were all just adventurers.
Then, Hydaelyn pops up later on in the story and refers to you as "Warrior of Light" -- unlike the NPCs, she literally means you are a warrior of Light that is combating the Darkness. She's blessed you and that's why you have Echo and are awesome.
THEN, the GC/Nation leaders decide to call you a 'Warrior of Light' after you help save Eorzea from the Garleans, namely because of how much your actions remind them of the original Warriors of Light that vanished from Carteneau.
So -- are all the people that Hydaelyn refers to as Warriors of Light Echo-users? Yes!
Are all the people that regular old NPCs refer to as Warriors of Light Echo-users? Probably not.
At the start of the MSQ, the term 'Warrior of Light' was just for "Person who fought at Carteneau and then mysteriously vanished, while also being impossible to remember." As the Adventurer Guild NPCs tell us, trying to remember them was like seeing their 'silhouette against the glare of the sun' -- that's how the name "Warriors of Light" stuck. ArmachiA is right in that there is no proof either way stating whether or not every single person who was affected by the time-skip spell was a person with Echo or if they were all just adventurers.
Then, Hydaelyn pops up later on in the story and refers to you as "Warrior of Light" -- unlike the NPCs, she literally means you are a warrior of Light that is combating the Darkness. She's blessed you and that's why you have Echo and are awesome.
THEN, the GC/Nation leaders decide to call you a 'Warrior of Light' after you help save Eorzea from the Garleans, namely because of how much your actions remind them of the original Warriors of Light that vanished from Carteneau.
So -- are all the people that Hydaelyn refers to as Warriors of Light Echo-users? Yes!
Are all the people that regular old NPCs refer to as Warriors of Light Echo-users? Probably not.
