By letting the footage of January 6th, along with the speech, tweets and words of Donald Trump do the talking, the House Managers put together a damning indictment of both the former president and mob who invaded the Capitol building that day.
The media display will probably fail to convict Trump. But it CAN lead to a censure of Trump backed with effective legislation and implementation of section 3 of the 14th Amendment. This strategy would prevent Trump from running for office again; and it would remove the powers that Trump abused from the hands of ANY future president.
This strategy is actually politically possible and is explained near the end of The War After the Election [https://medium.com/illumination-curated/the-war-after-the-election-545de96aa4ca?source=friends_link&sk=627c55d616d9296af3e398f1686493a4] and in a link at the end of it that explains the legislation. The article also summarizes the findings of the Transition Integrity Project, a group that included former Congressmen, United States Senators, previous cabinet members, White House Chiefs of Staffs, Secretaries of Defense and Homeland Security and state governors whose “war games” in June of 2020 predicted almost exactly what happened leading up to the Capitol attack.