People are to focused on the plausibility on the seperation. Which would be nation ending levels of bad instead of what the general existence of the group does.
If we look at America, the true MAGA segment has never been anywhere close to the majority, but the 2 party voting system and the supposedly more sane right wing voters that are willing to vote with them has brought us the America of today.
This is similar with how Danielle Smith is trying to have directly influence the judicial system. She's unlikely to succeed in this case but in a already flawed system like Trump she'll eventually be able to slip things through then we end up with another completely comprised institution.