Politics and the need to have the Core developers out. Some say it was because it would render Bitmain's Asic boost useless, and all other reasons that distracted us away from the truth. But I believe it was politics.
I will leave Achow and the rest more learned about the situation to comment.
youve got the right answer,its Politics we know that inside crypto are those
whales big miners and developers that having some issue towards each other,maybe
the segwit2x was been politicized thats why its cancelled and still dont know yet
when will it be