Stuart,
Unless there is additional information, besides the EMG, I can't see how the doctor would even mention MND in his summary. Nothing in that EMG suggests lower motor neuron pathology unless the doctor saw something else and included it in his thinking. It would be the first time I've seen only fasciculations on an EMG that ended up being ALS.
If you had all upper motor neuron findings, PLS would have to be ruled out but your ability to walk for that length of time gives me the impression you don't have spasticity.
You already knew you were having fasciculations and they have been with you for a long time so, if it were MND, I would think your EMG would show denervation, reduced recruitment, positive sharp waves, and fibrillations. It doesn't.
I've had a bunch of EMGs for training and research purposes at Mayo Clinic and my very first diagnostic one was way back in 2014. It showed active and chronic changes in multiple muscles tested. As I progressed, recruitment was reduced in all muscles tested and more muscles showed changes.
Is it possible that your doctor already shared this EMG with the neuromuscular doc? Because, I'd be surprised if a neuromuscular doctor said ALS is on the table unless there is a lot more going on with your clinical exam and, even then, the EMG doesn't support a diagnosis.
I know this is scary and maddening and I hope you can get answers.
Just for the record, my ALS started with cramps and fasciculations in my left foot. I ignored it until some other issues popped up (six months.). That's when I had my first EMG and it was bad.