[Spoilers MAIN] Obsession about fake identities

Today, I saw the post asking what Septa Lemoras' real identity might be. I was relieved that the top comment was just ''Septa Lemora''. I'm quite annoyed that the ASOIAF community is obsessed about how every character has a fake identity. Mance is Rhaegar or Arthur Dayne, Euron is Daario etc. But in my opinion, this is based on a misunderstanding. George doesn't play with fake identities, he plays with secret identities. The important thing about the Hooded Man in Winterfell is not that he might be Howland Reed or Benjen Stark; it is that his identity is unknown to the other characters and therefore the reader.

The same goes for Coldhands or Septa Lemora. And in the cases where it is important who the person in question is, it is relatively obvious, like with Jon's mother or Robert Strong.

But what do you think? Is the community's obsession about secret identities actually a theme by George or completely overblown by our longing for TWOW