Christian man sues employer for forcing him to see a Pride flag on his way into work
(www.lgbtqnation.com)
So the argument against the lawsuit in the video was that speech should be completely free and everyone just has to bear with the insults. That logically means that hate speech also has to be accepted, which is incorrect because that leads to intolerance and fascism. That is why the video is incorrect, because hate speech cannot be tolerated.