If I may ask, what would they have to offer since they're literally just babies and may not have enough experience.
Just because someone is a Jr member doesn't mean that he is without general forum experience or that he is new to bitcoin. Imho, bigger problem is Jr member signature visibility, or to be more precise the lack of it.
You're right. What I said looked like I was generalizing but I used "may" , which means there could be those who may not be as knowledgeable as well. I've seen some insightful works from very young accounts but you'd agree with me that most times, newbies are regarded as the ones who give low content posts and often spam that's why I said what I did.
Also, like you mentioned, the fact that the avatars can't be visible is more of a reason the junior ranks can't be considered.