> That can be cameras, tv's, thermostats, tv sticks and anything else that might not only call home
replyThat is not enough. You need to air gap devices that have legitimately no business communicating with anyone or anything outside the house. TVs, thermostats, and other Internet-of-Crap gadgets do not need "firmware updates." Either they work out of the box, offline or within the LAN, or they get sent back for a refund wherever they came from.
I don't think this would make a big difference for the threat model described in the OP? They'd still be able to use your IP Address and potentially do nefarious things through your role as an unwitting proxy.
replyUsing one device as a proxy is a few steps away from trying to exploit and infiltrate the other devices on your machine as well. An unwitting proxy is already crossing the line to putting a fox in the henhouse.
replyLimiting what outbound access devices can/can't have is an important skill to learn.