You’re literally saying that how much time employees spend doing their jobs on the forum needs to be kept secret from their managers.
Right.
How much time people spend on the forum is one of the metrics Discourse and its users can tell if someone is a valued member of the forum. Here’s some stuff your managers can’t be trusted to know about:
It’s going to be hard to build a community if participating in it may be cause for being penalized by their managers.