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It seems to me that everything which broadcasts/asserts routing decisions in a network (any layer) is deceptively simple and potentially dangerous.

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> deceptively simple and potentially dangerous

Also, there's not a lot of people keeping the whole thing running. iirc there's only like 13 or 14 root DNS servers on earth.

There are 13 root name server addresses, but most (all?) of these use anycast, i.e. there are actually several servers with the same address, and your traffic will usually be routed to the one closest to you. There are over 1500 root name servers.

https://wikipedia.org/wiki/Root_name_server

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