Chiropractor? My God! My landlord/plumber was a chiropractic "doctor" on Tuesdays and Thursdays.
You asked for opinions. Here is mine.
First, the mainstream medics: I discovered that few medical doctors really understood ALS very well. I found that none of the nurses we dealt with had any clue how to care for a paralyzed person. Yet it seems that everybody in the medical community is required to
pretend they know everything, even when they don't.
Before allowing someone to touch my PALS body, I ensured they had experience working with paralysis.
As for alternative practitioners, my opinion is: don't. ALS is a disease that destroys certain nerves in the brain and brain stem. Super-educated researchers with huge amounts of money in well-equipped laboratories around the world have not got it figured out yet. Alternative medicine, like homeopathy, naturopathy, chiropractic, energy medicine, various forms of acupuncture, traditional Chinese medicine, Ayurvedic medicine, Sekkotsu, and Christian faith healing don't stand a chance. The US government has spent billions of dollars trying to ascertain the scientific value of these practices in general, and determined that they're no better than placebo.
Others will disagree. My wife, my PALS, was a medical doctor for 20 years, so it's easy to call me biased.
https://en.wikipedia.org/wiki/Faith_healing