The most are incompetent having difficulties to play bass like it has to be through the songs. But that's nothing wrong with it. On Noblesse Oblige Koffi invited Ngounda Lokito to help the then young Rocky Blanchard. Later they didn't need Ngouma Lokito, because there was Beniko Popolipo who was coaching the guitarists and bassplayers in Quartier Latin, Beniko Popolipo played btw bass on some songs in V12 (for example Aspirine).
The different with bassplayers of the 5th generation is that they dont go to the elders to coach them or tell them some secrets, like for example Tosha Fulakanda of Viva La Musica used to do. Also back in the 90s, bassplayers like Pathy Bass, Dello Bass, Motingia Tunga, Lofombo and co would meet each other to exchange some ideas.