Commas aren’t enough on their own, basically. Sometimes you make a sentence which has a comma, but also needs to be divided up in a separate way and place[;| - and] an em dash represents one possible way to do that. More structure is usually better for readability.

I just use the normal ASCII hyphen for it, though. To date nobody has accused me of being AI, and I’ve been a very light user of AI myself.

I thoroughly enjoyed what you did with the formatting there.