"People could get hurt!" Lee is either ignoring that they have already been hurt, or doesn't count themself as people. They don't quite understand why they're not making any forward progress. They're wriggling as hard as they can.
"I have to help. I can help. Make all these birds go away." Eventually they tire themself out and flop on the ground, head rolling back and forth, making strange rhythmic movements. The music in their head is so loud they almost can't hear anything else and it's even worse than the voices. At least those sometimes say things they understand.