As a Mini 14 shooter, I'll offer an opinion ....
A stock on any rifle is just a handle. Unless it does all the right things required to get optimum performance out of a particular design, nothing is going to change but the ergonomics. That is a subjective evaluation and what works for one is not necessarily going to work for someone else.
If a stock has bedding issues, it matters not what material and form it takes. The proof is in the performance. People get the accuracy they want with factory stocks, with or without modification. The biggest factor remains the nut behind the trigger.
In the case of the Mini 14, what model, generation and barrel type is your rifle? All of these are factors in what works or not.
There are video and written reviews on ANY and EVERY after market item out there, including rifle stocks. Don't put much faith in the maker's comments on their product. Get a few reviews from users who have first hand experience with the product. It will surprise you how people have differing opinions on the same product.
This is why you see a lot of after-market products on the EE - people bought them, tried them and found they didn't live up to the hype.