Nice find John, and a good comment!
Good to see a large-scale electronic parts distributor showing interest in a niche segment of business, like model railroading, or electronic hobbyists. Digikey has always been hobbyists-friendly (although back in the '80s they used to have $25 minimum order requirement). Not anymore.
I wonder if the author is a model railroader (the bio doesn't mention that)? If he isn't, then he sure is up to speed in model RR electronics.