So many possible angles...
1. The Dems are going full anti-free speech in response to pressure from the left. The whole "shouting fire in a crowded theater" thing was a WW1 overreach by the Wilson administration. I can't think of a Dem today who believes that agitating against the draft should be illegal. In fact the left went all in on that during the Vietnam War.
2. Nancy Pelosi is not well.
Everyone has their off days. Anyone can make a silly mistake sometime. But Pelosi just seems to offer up an endless barrage of these. It's not her first slip. It's just one of the more amusing ones.
It's never been clear what, if anything, she brings to the table except the cultivation of Bay Area donors. And that seems to be about it. She has no grasp of anything, from policy to leadership. Where Schumer and Reid were pitbulls, Pelosi is more like a confused poodle. If the Dems had her in the Senate, there wouldn't be a single excuse left for the Republican majority.
Now all that is a problem for Dems. And it's emblematic of a party whose first legislative priority was getting the money under Obama. And whose current priority is impeachment.