the conclusion of your argument is "this has absolutely no chance of making any dent in the network as a whole" which is faulty. much of the network is hosted by providers that charge for upstream overage: https://bitnodes.io/nodes/?q=ipv4#networks-tab. if a pool's full node is tcp/8333 exposed or a conventional full node is attacked on a vuln host there will be financial/operational consequences. this attack is a "nothing-burger" until botnet skids demonstrate otherwise.