Trade secrets aren't protected by law. That's why they aren't disclosed. If someone lawfully reverse engineers your trade secret, its secrecy disappears without legal recourse. Decompiling a binary for RE interop purposes is legal in the US.
https://www.wipo.int/en/web/trade-secrets#systems
Now yes, they're fair game for reverse engineering, but that doesn't mean someone can't be mad about it and tell you not to do it.