the "short magnum" cartridges were a poor attempt to get people to buy new guns
You're certainly not alone.
I haven't heard an older experienced hunter/handloader who hasn't said exactly the same thing. Many will say the same thing about
any magnum, including .300 WM and 7mm RM, except for the dangerous game stopper rounds.
The last guy I talked to, I asked, "So the world could pretty much get by on the .30-06?" He said, "Hell, the world could get by on the 7x57." I asked about the wall of his living room, recently covered with African mounts from a trip he did last year. He said, "Yup. Every one of them, 7x57 Ackley Improved. That's all I took with me."
I can't say I ever saw anyone with
any gray hairs asking about WSM's at the store, either. And it's the guys with
mostly gray hair who spend the most on rifles, or so it seems.
Now every cartridge has a purpose and a niche, of course. The WSM's are just the ticket for the Kifaru Rambling Rifle, for example. Unfortunately, I don't think you can buy one right now, either. (It's a really neat custom takedown ultra-ultralight multicaliber bolt gun for long-term backpacking/hunting, handles rabbit to moose and weighs about 3.5 lb plus scope. If they ever DO make it again, look here:
http://www.kifaru.net/HUNTHOME.HTM )
Handloaders do some wacky stuff, too, especially those with the scratch to have custom rifles made, with custom actions and chambers, and then to have custom dies made and custom brass formed. I talked with a guy who was shooting a varmint round he designed himself. Put 5 .204 rounds through a jagged hole at 100 yards, so I guess he knew what he was doing.
But Winchester was gambling on a
mass-market round, and that's a whole different ballgame.