Get as far away from this “specialist” as you can, because what you were told is an absolute and well known lie. Hearing aids do stimulate the cilia, but so does most sounds without a hearing aid and noise induced hearing loss is actually caused by over stimulation and damage to the cilia. What kind of specialist is this?
There is a phenomenon called sensory deprivation, whihc can lead to reduced ability of the brain to make sense out of speech through lack of stimulation to the central auditory pathways (think nerve’s dealing with sound), where hearing aids can help keep them stimulated. This deprevation only occurs at losses greater than 60dB at any frequency, so does not apply to you.
Also a CIC in your case will very likely lead to occulsion (to experience this put your fingers in your ears and speak normally) - this is what it might sound like with CIC’s in your ears every time you speak. You will probably be better served by open fit hearing aids if you decide to get them.
Your need for hearing aids are dictated by your audiogram, which does suggest you are likely to find benefit, your needs re hearing and your motivation. Generally the younger you start wearing hearing aids the easier they are to get used to. It is all about improving your quality of life, rather than using scare tactics to get you to buy a product.