Just adding some reason for my suggestion.
1. Pvp. As we know about sniping is normal thing here. 1 way to make it easy sniping someone is using inspect. It will be harder for player or group to snip someone if inspect doesnt show player on or off.
2. Scam. Same like above, scam is normal thing here. When someone, specially newbie, find some stuff, many those scammer will try pm. Turning off our status maybe help abit, but they could just wait and check inspect if OT player is online or no, they could keep sending pm until OT player change back to online. If they cant inspect them, those scammer will stop trying.