I think that his compositions are usually elevated by her arrangement team and it's not usually super positively received when they lean into the "old TK sound" if at all. With all of the songs he had done up till he 'retired', I kind of wonder how much choice there was for Ayu in getting demos since usually she gets a certain amount of demos from Max or her managers then picks from those.
https://twitter.com/GAK0116/status/1287222395153993728
GAK who did the amazing rock mix of M made a version of Dreamed a Dream that sounds AWESOME!!!