Player linking bits I think is a whole topic in and of itself with different ramifications than staff bits. Staff bits have an implied power aspect and control difference.
I don’t even think it’s done for ill will, but it can still be jarring. If you think person X is this cool person that you have been playing with, spawning ideas with, cracking jokes with, and maybe sharing RL information with – and then you find out they are someone else. It’s a trust issue. It doesn’t mean it’s the end of the world, but it can disillusion a person. If that happens, sadly every thing done on either alt becomes suspect. Then it starts the brain worm of what else weren’t they upfront about. These kind of small choices have large and lasting impressions.
As a player, you absolutely have a right to complete privacy for your comfort, protection, or preference. As an admin on a game, you have a bit less. You don’t have to disclose your personal information ever, however, you do have to disclose you are the CEO of the game that others are playing. Like stated before it’s the implied trust part of it.
That’s at least my thoughts, doesn’t mean it’s right, but it’s my opinion.