The issue is escalation. Someone showing up at your doorstep and publicly confirming your location for others is the main issue. But morally and in the grand scheme of things, based on who the people are defending this woman, and the people she associates with, it is absolutely a significant threat on his life for her to show up at his doorstep and should be responded to strongly.
She is not some little innocent old lady. She is a deranged marxist who worships violent radicals and stalked his house. Again I have to assume anyone defending her or her 'right' to show up at his doorstep and film him and most likely attempting to incite more violence from posting/confirming the video is in the same camp as her. Do you support political violence? Do you not think these people are capable or willing to commit political violence? You people are hiding and obfuscating your views when its plain what they are. Just come out and say it. You are not required to wait until someone shoots you to defend yourself. Showing up at your house is enough of an act of aggression when your side has publicly and vehemently demonstrated they support violence, terrorism, school shootings and assassinations. Your side has no leg to stand on anymore since you all went full mask off recently.