Since its July release, “Wasteland,” Brent Faiyaz’s dark, introspective R&B album, has been one of this year’s more polarizing releases. Some have criticized the disc’s length and skits, while others have praised its honesty and cohesive narrative. In 2017, Faiyaz’s debut album, “Sonder Son,” announced a major new voice in R&B, and “Wasteland” seals that initial hype. As an independent …