This is a forum Brian, so I'm right and everybody else is wrong.
When you're first starting out it doesn't matter what club you've got in your hands you'll still miss the ball a fair few times.
You could argue that starting with a blade will make the beginner a better player in the long run as it's more important to get sweet spot to ball than with a GI club and so their technique will need to be better, and didn't we all start with blades back in the day?
I'm a pretty poor golfer but still find the reward of hitting a good shot with vintage/classic clubs a much greater attraction than using the latest techno-wiz to shave a couple of shots off a round.
It's not all about the score.
(All of the above is my humble opinion.)
My first sentence says exactly what you are saying, "isn't the challenge whatever you want it to be?" I like playing Pro-V1's but in reality the swing speed doesn't compress the ball enough to get the best out of them. I'd be better off, performance-wise, playing with a Srixon AD333 but I don't like the feel off the short irons and putter. Results suggest otherwise but I'll stick with a performance ball.