Indeed asking for peace isn't enough if you're going to fan the flames in the same speech. That wasn't the time to reassert the legitimacy of his supporters' motives, he's not any citizen, the President of the United States should have sought to de-escalate the situation created by his mass movement in the US capital first and only.

The time to talk about their struggle was another. And that without going into the legitimacy of him disputing the election results or even the legitimacy of him leading a revolutionary movement at this point.