I don't know where you get the idea that stock & keep = more kids and women fishing.
More than one have questioned this. I'd question it too, but I think I understand where this comes from.
It has to do with age, and inability to empathise.
I grew up in the 60s and 70 and I am guessing maxi has me by a few years.
1. Back then, I didn't know anyone who fly fished. Dad and my uncles fished with bait, so I fished with bait.
2. When it came to trout fishing, the mentality was ... If someone wanted to fish for trout, they had to go to a stocked stream.
3. Goal then was limiting out.
That was my expeirience as a kid, and I am sure I was not alone.
But a lot of things have changed since then.
Fly fishing is still a minority, but growing.
The more adults that learn how to fly fish and C&R, the more children will be taught the same.
As the validity of the youth argument loses ground, the argument just gets louder.
Do I think bait angling should be outlawed? Hell no.
Do I think C&R should be a general regulation? Hell no.
Do I think all trout stocking should cease? No, but it really wouldn't bother me if it did.