The original joke is that tech workers know what dangers IoT devices can bring copared to enthusiasts that are fueled by hype

The added joke is that people who like to play around with tech build their own IoT systems at howe which are (mostly) completly disconnected from trackers, internet and subscriptions making them more reliable.
The guy is someone* with the look of supriority meanint to represent the selfhosters

• i too dont know who exactly this guy is