I have a theory
So people always make a big deal about how in The Lightning Thief, it’s all “names have power,” and then later, it’s “Hera this, Gaea that, Athena this, Zeus that.”
But you’ll notice if you read TLT that Annabeth and Grover both sometimes slip up and call things by their real names.
“The Fur … I mean, your math teacher. That’s right. She’s still out there. You just made her very, very mad.”
This is followed by:
Annabeth glanced nervously at the ground, as if she expected it to open up and swallow her. “You shouldn’t call them by name, even here. We call them the Kindly Ones, if we have to speak of them at all.”
But you can tell that Annabeth was about to say “Fury.” Annabeth is used to calling them by their names.
And this is a girl who’s been at camp since she was seven. It wasn’t just a mistake because she didn’t know.
My conclusion is that once the whole thing with Zeus and Poseidon happened, everyone’s cautiousness went up like 120%. However, the normal thing is to call the gods and creatures by their real names.