They are correct, there are no actual bearings other than oil film, The bearing caps mating surfaces can be milled and the caps line bored and honed to remove any damaged surfaces very easily by any competant machine shop, but the rest of the heads internals are probably damaged as well, gonna get costly refurbing them, and then you also have to worry about the head being warped. I think you will have far less headaches now and in the future with replacing the head.