Someone will use and try the marginal
Of course, bullets have improved over the last twenty five years. Cartridges aren't exactly the same.
.357 magnum was seen as marginal in a revolver on deer, but was seen as adequate by some.
It may never be a case of if they work. When will we hear of cases when they don't work. Don't work on the highly prized trophy deer. Get a testimonial account of the bullet that didn't work. If it doesn't work? And what really is marginal to use? For some or many?