This guy sounds like a flock of ss frets came to him in the middle of the night and viciously attacked him for no reason, slicing his tender little fingers up mercilessly and trashing his shop and tools along the way for good measure.
He shows us what strings look like after riding on ss frets for some period, but neglects to show us what strings look like after riding nickel-sliver frets for the same period, as if in the latter case nothing happens. Fact is,
all frets wear strings, and the more abrasive they are the faster they do it. A highly polished fret will also do it, albeit more slowly. Never mind the material.
SS frets will put the hurt on tools if you buy junk tools. You can't buy a 150 piece set of files from K-Mart for $5.99 and expect them to last. You need good high-carbon steel or diamond files to do decent fret work, I don't care what the frets are made of.
SS fretwire will tear up cutters
fast if you get the wrong ones, and even the right ones don't want to last much more than one job. But, there are alternatives. You can grind them instead of cut them, and there's a jig out there that makes that easy. It also returns a much better job. I recently got one to do the frets on the L5S' neck, which is bound.
Grinding side. Those round black things are rollers that guide the file. The horizontal ones are height adjustable to set the depth
of cut for the file. You clamp the jig into a vise, then clamp a fret into the jig, and you're ready to go.
Rear view. The knob you see at the bottom is used to clamp the fret into the jig.
What you get
Another view
It ends up being faster than the snip & file or Dremel grinder methods we're used to, and gives much better/repeatable results.
Not all luthiers charge more to work stainless frets. I don't. In fact, I
prefer to work them. They're more forgiving. I'd highly recommend them to anyone, and can't think of a single downside to them for the user or the worker. It does take slightly longer, but unless you're doing a dozen setups a day, I can't imagine the time impacting your schedule enough to kick about.