Could the Dazzlings know more about Starswirled?

[cider float 2,538]

Since the Dazzlings faced off against Starswirled wouldn't they have some kind of knowledge about him that others didn't? They were around the time he was around as well.

[Baykush 328]

Not necessarily, look at Tirek for example, he didn't even know who Twilight was until the end.

[cmarston1 5,959]

He banished them to the human dimension, and given how Starswirl has been involved in everything, they must have known something about him.

[Ganondorf8 11,363]

In their comic, they discovered that he was immune to their singing although he was the one who revealed that to them when he attempted to convince ponies that they weren't to be trusted. The Dazzlings also know of his vast magical powers and his eccentric personality.