Actually said paragraphs are not quite easily to dismiss if one is knowledgable on the subject. The fact is this, the majority of scholars, the experts on the subject, do not dismiss the references. They do not state that they are forgeries. The common consensus on the subject is that the longer reference did in fact contain some reference to Jesus, but that at a later time, someone added additional information into the reference.
More so, the shorter passage is nearly universally accepted as authentic. The Wiki link both of us have mentioned states this to be true as well. So unless you provide some evidence for your position, it simply is unfounded.
As for hearsay, that is what much of history is. To rule out hearsay in history would rule out the mass of ideas that we have. You might as well throw out our newspapers, history books, etc. Even in a court of law, hearsay is allowed at times. The hearsay argument simply is ignorant and a cop out.