"...But let them try." OK, But why let them try on Librivox? In my original posting, I quoted a friend of mine who lamented that mid-way into a novel, there suddenly appeared a series of sections by nearly unintelligible narrators, interrupting my friend's enjoyment of the novel. This is a likely common event of the "...but let them try" policy.
Perhaps your friend should stick to listening to solo recordings.
Random thoughts:
LV isn't 100%, totally, completely focused on the reader. Of course we want people to listen, and society to benefit, from the recordings. But putting a barrier up such as you describe would certainly cause otherwise good readers from attempting this.
I get enough negative reviews of my recordings on some of those apps. I must ignore them, or else I'd quit. And if I quit, those who tolerate my recordings would not have the audiobooks I have recorded. If I had known there was a panel of listeners waiting for my audition when I first started, I wouldn't have started. Even if I knew they were just trying to weed out the worst of the worst, I wouldn't have started. And I bet many others would be in the same position as I. Our reader pool would dry up.
Our prime directive is "to make audios of public domain works and release them, for free, on the internet" (or something very similar). Of course the "release, for free, on the internet" implies people downloading and listening to them.
I have listened to (and BC'd, and DPL'd) group projects in which sections were read by people hard to understand, or people who read monotonously/"poorly". Every BC wants their group project to be "perfect" - or at least as good as it can be. But I recognize that without the freedom for readers to read, even the "bad" readers, they won't develop into "good" readers, and many "good" readers wouldn't have given themselves the chance. So I sigh and carry on.
On a practical note, we have enough problems having people to check 1-minute tests in a timely manner, just for the technical stuff. I can't imagine trying to gather and hold together a panel of members who would give an ear to up to a dozen tests a day, 7 days a week.