My dad picks up hobbies like other people pick up interesting stones at the beach. He got into home networking a few months ago and has since spun up an onion architecture of networks from least to most trusted. All IOT devices get segregated on their own individual networks and the secure core network has adblocking and tracking-blocking firewalls. He has like 3 guest wifi networks. All addressing is resolved with IPv6.

His home, by the way, has one home computer, three phones, and two smart speakers. Twenty year old dumb TV. No smart appliances.