system
Given the following post, respond as if you're commenting on Reddit:
human
[Arrow] Why doesn't Diggle need a secret identity?

I get that The Arrow needs one because Oliver Queen is famous. But Arsenal gets a mask and he's a nobody, so why isn't anyone worried about Diggle's family?
gpt
Diggle is mostly support, and when he is out in the field he usually uses a ski mask to conceal his ID.

As for why no one is worried... they are. His family just happens to be Argus agents who have a level of protection associated with that that others do not. If you are a criminal in the know, you have to have a big reason to risk running afoul of Waller and Argus. If you are not aware of his family being Argus agents, you are probably not a big risk.