As a paralyzing, fatal disease, ALS is not so subtle or difficult to find that it requires self-diagnosis. Your statements about where it starts, how it starts, and why you think you need to pursue it more are all incorrect, as noted by others.
Your analogy regarding alcohol dependence is apropos to the extent that those of us more familiar with ALS than you are telling you that you don't have a problem. If someone asked you, "I enjoy a glass of wine once a month -- am I an alcoholic?" I would imagine you would say no.
I would always get a second and possibly third opinion as to any proposed spine surgery. You do not mention PT, which would normally be considered first. That many people have more than one condition, argues against chasing the "grand explanation" for everything you have experienced. If you have RLS, it can be treated. If you have spinal stenosis, it can be treated. The really good news is that you don't have ALS, because the treatments available are nowhere near as effective.
No, you have presented absolutely no reason to see an ALS specialist, but, as Nikki pointed out, you are near several. If you are not going to resume your real life until you see one, pick up your phone if you are prepared to accept their verdict. Otherwise, I hope you can leave those scarce resources to those who need them and rely on the passage of time to reveal that you are simply not losing mobility to the extent that occurs in ALS.