By the same reasoning, what if the entire Bitcoin network is consisted of honey pots? What makes you feel safe and private in that case? You'll use those block chain explorers to just broadcast a transaction anonymously. You don't care what they'll do with it later just like you don't care when your node broadcasts transactions.

Broadcasting through a block chain explorer is a solution, however I'm sure you can send it directly to the network, without this kind of site-intermediary.