Kushner is the guy who convinced Trump to hire Priebus, from which many of the admin’s staffing errors and undermining have sprung.
He and Ivanka have been at the center of pretty much every bad policy position pushed at the WH.
As to Parscale, his company sucked up $94M from the Trump campaign, primarily for ad placement—a position from which sucking up to Jivanka is obviously key.
If not for Brad, Jared, and Reince Trump would not be president. Would that be better?