I agree, as a seller, the Epic Games silence about this situation is really frustrating.
The massive backlash for the lack of review texts, Q&A and wishlist features is very evident on the unreal forums, reddit and even in the comments section of official release announcement on youtube: https://www.youtube.com/watch?v=b9E4QgRiZc4
As a software engineer it is even more frustrating, migrating reviews, questions and wishlists from the Unreal Marketplace it is a trivial task from the technical point of view.
The lack or transparency and proper response only makes sellers and clients to lost trust on Epic Games.
For any Epic employees reading this post, please bring this situation to your manager. Pleople need to be heard, feeback is one of the most important factors to provide a good service. Without review texts and the Q&A section, FAB hindered the ability of responsible sellers to gather feedback from clients.