Just sounds like an excuse for Suda not to go through with the Syndrome games to me that he just made up on the spot. I mean, we are the fanbase that enjoy FS&R and Killer7 for crying out loud, not like we aren't used to weird storylines by now.
Yeah, if Suda does do an entirely new Kill The Past game, as in one starring Sumio set in the same universe as The Silver Case and Flower, Sun & Rain it will feel kinda wrong Takada not being involved with the music since he really elevates it so much. Yamaoka is a great composer but Takada's music has a distinct sound to it that suits Suda's directorial work so greatly. I've been hoping they make up and do another game together, but it's looking unlikely at this point.

At least the Danganronpa V3 soundtrack will be amazing and if Ward 25 happens we will have more unknown Takada music to listen to. Don't think I've
ever seen any Ward 25 music on the interwebs aside from like one track on NicoNico. Really hard to find thanks to the platform it originally released on.