I’m not trying to be condescending here, but I’m just asking what someone thinks is happening here and what they can do with information scanned on your network.
Suppose the data is retained in association with your pseudonymous account. So now in addition to my IP they have, what, the internal IPs and device names from my LAN? How does that lead directly to me without significant additional effort? I think their best option is still hitting up my ISP to get the billing info and service address of the account.