Can we talk about how literally every single person surrounding Trump is their own special brand of terrible? But it is all in service to the same goal: the Republican notion that to oppose them, or even question them, is to act against the republic itself.
There are a few obvious takeaways here. There's no plausible way to spin the Constitution-prescribed remedy of impeachment as a "seditious conspiracy"; following the Constitution is about as unseditious as you can get. "Overthrow" is similarly, cough, wrong. Don't get any of us started on calling Trump the "people's president," or the notion that the speaker of the House is "betraying her oath of office" for allowing an investigation of apparent administration crimes as outlined in the aforementioned Actual Constitution. It is shamelessly asinine, there's that "overthrow" language again, and, long story short, Brad Parscale has managed a propaganda-per-word ratio that puts even the Devin Nuneses of the party to shame.
But Parscale's burps here are the actual Republican strategy, and stem from longstanding Republican rhetoric. Attempting to hold lawbreaking Republican officials to account is a "seditious conspiracy"; utilizing any of the powers specifically designated to lawmakers by the Constitution is illegitimate and a "betrayal" if done by a Democrat. In the Parscale framework, the mere presence of a non-Republican opposition is itself illegitimate. Opposing Republicanism amounts to betraying the nation itself; the two are seen as synonymous.
This theory, which has been pushed heavily by Fox News over the years, is intended to convey to the public that anyone attempting to rein in conservative whims (much less crimes) is a direct danger to the republic. And this has continued to result in domestic terrorism aimed at the targets of the day, from Glenn Beck's bizarre claims against the Tides Foundation to the Trump van would-be mail bomber targeting an extensive list of the people Brad Parscale and his hires call out as enemies.
We can see this again in the other conservative propaganda story of the day, the production of a truly weird and ultraviolent depiction of Donald Trump, glorious movement leader, systemically murdering a laundry list of named political enemies. The video was screened at a pricey conservative shindig at Trump's Doral resort, with top conservatives in attendance; it was not merely the usual scrapings of the neo-Nazi corners of the internet. Or rather, it was—but brought to top-level movement prominence as an appropriate depiction for that time and place.
The elements of the video are explicitly fascist. There is Dear Leader, depicted as larger than life, a fit and overpowering action hero capable of single-handedly committing great martial acts. There is the explicit celebration of violence—of sweeping, politically orchestrated murder—as tool for furthering the movement. There is the depiction of the free press and opposing political voices as not mere adversaries, but enemies to be dispensed with. Public objections are dismissed as the impotent scolding of prudes; the clip is merely intended as a humorous diversion for the assembled dignitaries. That the named targets are speaking out against it is just further evidence of their own animosities.
This is the environment in which Brad Parscale bleats out new declarations that the House speaker is betraying her office and nation, and that investigating Dear Leader for a self-evidently criminal act that Dear Leader himself provided evidence of is now seditious and a conspiracy. It is intended to delegitimize those that oppose the "movement" not as wrongheaded, but as enemies of the state. It is intended to push true believers closer to the edge, as Dear Leader's allies openly muse about the possibility of civil war if Dear Leader is held to account.
It is not Trump, but the party. The whole of the Republican Party has been playing this extravagantly dangerous game, squeezed up from militia groups and white nationalist fever dreams to be promoted by Fox News talking heads as a means of defending conservative allies from the usual rigors of oversight. You can say the word fascist; Parscale and the others have wrapped themselves in many of its most dramatic particulars. Whether that is tactical plan or mere bumbling coincidence is at this point irrelevant.