Cochlear implants are not technically reversible, iirc. They permanently destroy hair cells of the inner ear during surgery to make direct electrical contact,

Cochlear implants are not technically reversible, iirc. They permanently destroy hair cells of the inner ear during surgery to make direct electrical contact, so removing them won't restore your pre-implant level of hearing. It's usually a moot point if your hearing's bad enough to be a candidate for implants, tho.