They've been voicing this literally for the last twenty-one years, ever since the 2000 election, along with other great paranoid ideations like re-education camps, RW coups, preemptive nuclear war, and a hundred other dystopian fantasies.
Meanwhile, I've seen the DUmmies and other extreme leftists openly propose each of those things within the last five years or so.
1. I've seen them propose "re- education facilities" for Trump supporters and their children.
2. I've seen DUmmies propose coups within the White House to force out Trump.
3. I've seen a DUmmy claim a year or so ago that, as soon as the Democrats take control of everything, the first thing they should do is order an unprovoked nuclear attack against Russia.
As Ann Coulter once pointed out, if you want to know what the Left is doing, look at what they accuse the Right of doing.