I guess I like Steve Irwin because of his unbridled enthusiasm. And I think he does educate, just in a different way. I certainly don't get the message that you have to wrestle everything to the ground.
And he reminds me of how I was as a kid (though I didn't deal with anything nearly as deadly), tromping through the woods and streams catching frogs, snakes and such.
To each his own...
"In the nightgown of the sullen moon, How the windows lean into the room, In the nightgown of the sullen moon."
-They Might Be Giants