I think the challenge here is that Holacracy is not just a different methodology, but a different KIND of different.
Most don't even realize that they have a default "operating system." It is not something they see...it is the position FROM WHICH they see.
So, Holacracy will naturally be misunderstood upon initial inspection. Resistance to implementing something that "wasn't invented here," makes a lot of sense. But Holacracy doesn't actually restrict them in the way that they think it does.
It is really about education. Or more accurately, providing people the opportunity to get experience. Then (if we are lucky), they may start "seeing" themselves and new possibilities for the first time.