Poloniex studied source code submitted by Sasha many years ago and found backdoors that permitted them to make any change they like on the code without need for community voting.
Source please.
It is evident from using the so called dex, that pairings can be switched on and off arbitrarily by a third party and they can also implement banner ads on the dex. Both these things require access and manipulation of source code by a central authority.
This old post is maybe a joke, but it makes some sense after all:
https://bitcointalk.org/index.php?topic=1526990.0