Your findings reveal cervical spondylosis, spinal canal stenosis, as well as cervical disk herniation. The severity of this condition partly depends on the symptoms that you may or may not be experiencing now. If your symptoms are severely interfering with your daily life activities, it is imperative that you consult a neurologist/neurosurgeon as soon as possible.
I think you should ask this in the "Ask A Doctor Forum" for neurology, there's a link to the left of this forum. If the doctor says you need to see a surgeon, to answer your question, I would call that serious. From what you report, your cervical spine is in terrible shape, and I wonder how much pain you're in. Surgery can help stabilize a pretty creaky spine, relieve some of the pain if you have it, and protect you from injury to the spinal cord if your neck gives away by accidentally wrenching your neck. Then therapy can strengthen the muscles in your neck and make your recovery easier and more successful. If it were me and I were in pain, and the doctor was definitely sure you needed surgery, I would take the shorter time route. In meantime, you could get second opinion. That's just my ideas, I'm not a doctor.