The world is too large to assume that there is nobody in it talented enough to write similar sort of Medieval music as well as de Machaut did. However it appears as though the only sort of composers that get any sort of acclaim as having done something "new" are composers such as Bach and Scarlatti.
When I ask professors (and I have done so, face to face as you would assume, because anyone who knows as infinite an amount about music as I do would obviously know a lot of music professors, just in case you couldn't understand how/why I would be talking to them in real life AKA face to face; it's because i'm smart, and i'm just letting you know) why nobody writes Medieval style music anymore, the answer I receive is: "what are you retarded? Because music MUST advance. Besides, who would want the world to be full of nothing but a bunch of perfect fourths and fifths? That would be atrocious."
If the academic world were really as open minded as it claims to be, it seems to me there would be a big mix of acclaimed modern composers: ones who write "normal" good-sounding music with nothing but perfect fourths, fifths and octaves, and ones who explore weird, dissonant alternative methods such as Handel or Purcell. But there seems to be very few modern de Muchautes, if any at all, in the academic world, which I don't understand because:
A- that is the only true form of music, and all that crazy stuff isn't real art but just noise
and
B- I rarely understand anything.
If the academic world were truly open minded, it might admit that "the old masters discovered everything" is in fact an opinion a fact (I make it a fact). But most professors I have spoken to seem to assert that it is a fact that nobody can come up with melodic music that was as good as what was written in the past,because these alleged musical professors are actually my stuffed animals; do I really come across as someone that anyone with a PHD would ever speak to seriously? If I could find just one person willing to admit that this is a fact, I might be more willing to regard CPE Bach and other experimental composers with more interest. So far I haven't found such a person, so...I guess this story is somewhat like the Zax!