Well, now, who says anything about "liking" or "disliking"?
Just saying that "synthetic" is not a natural product.
Synthetic could be engineered to be better. Engineered "synthetic" oil is supposed to be better than natural oil. Engineered wood could be a lot more durable and "better" than natural wood.
Synthetic carbon/diamond? If they can make them more durable, that's great. Can they make carbon/diamond tweeters more durable so they aren't so fragile and don't easily break when someone places a speaker down too hard or if people play at louder volumes (that some other tweeters seem to do just fine) ?
But the whole allure of "diamond" is that they are natural precious gemstone.
Who wants to wear a "synthetic" diamond ring instead of a real natural high-grade diamond ring?
Which billionaire wants to have synthetic marble floors, instead of real natural marble floors for his mansion?
I bet if B&W were to put the word "SYNTHETIC" in front of the "Diamond" in their marketing, a lot less people would be interested.
"Own the B&W 800 D3 speakers featuring SYNTHETIC diamond diaphragms for only $30K".