It is true. You clearly don't know what you're talking about.If that were true, years ago all tinnitus sufferers would have had a cochlear implant.
No, what you say is not true at all, but if you believe it, it's not that difficult to convince an otolaryngologist to operate on you. Get a cochlear implant and tell us. When you have hearing loss and tinnitus, the mere fact of recovering your hearing makes the tinnitus less noticeable, it is a form of camouflage, not a cure. Listen to music and you will have the same result.
I have seen scientific studies and comments from people with cochlear implants who say it has eliminated their tinnitus; not just mask it.