Because they will see video footage of a march with bit of added unarmed riot-ness, as opposed to their golden dream of it being an insurrection.
I'll just sum it all up. Trump lost, if he wasn't so abrasive, he would have won. I would say he's one of the most tenacious and stubborn guys on the planet, which has its pros and cons. He's latched onto dodgy footage of the election process in various states, he believes he was cheated, I mean, he felt everyone loves him and thus should have stormed the election.
So he can't take the country violently, he can only stamp his feet, so he asks for a peaceful march, but unfortunately some nuts got a bit rowdy. So why didn't Trump give the order to overthrow the government? Because he knows he can't, he wouldn't give any such order, he wants everyone to know he felt cheated.
So we all know that, we know what level his foot stamping got to, but the world has a problem, Lefties. They're emotional, they gallop past the level we all know it reached. So they view it as this happened, and that happend, and they desperately needed to know it was an insurrection, their dreams are built on that.
And day after day, their bubble keeps bursting, they had such high hopes, but the non emotionals could see the Lefties impending disaster.
And despite Trump's character, he is far more qualified to run a country than Obama and Biden. But as the world knows, America run their politics on character assassination, and not by economic results.