I don't think any of the final years songs we've heard so far sounds bad, far from it, but they just aren't "unique" or "unlike anything we heard in music" like they were rumoured to be, you can easily draw comparisons to other songs of MJ's or to songs from that time period.
"Adore You" is a lot like "Will You Be There", "Rocker" is like "They Don't Care About Us" with a tint of "Give In To Me", "Boy No" sounds like your average Buxer collab from the 2000's, "Water" was described as being a complex track but it's essentially just a looped chorus, "Dark Lady" sounds like late 2000's hip-hop and so on. Plus a lot of the songs are instrumental grooves which have nothing to write home about.
Again, I don't think any of these songs are bad, you can definitely see the potential with a few of them, but they were definitely overhyped to a certain degree like a lot of the material in the vault tends to be.