You are looking into an outhouse and talking about muddying the waters. In this media landscape no claim will go unchallenged regardless of how much evidence there is. The zionists and their supporters already say everything video exposing the genocide is staged by actors. So telling a lie isn't going to make any difference.

The zionists and their supporters are as ideologically polarized as they can get. They are supporting a genocide. The people opposed to genocide however have a lot of room to be radicalized. They need to be motivated to go beyond words. If a Greta said "israel blew up my boat and tried to kill me" and israel says "they blew up their own boat" nobody is going to change sides. What will change is how far people will go bringing an end to the genocide.

Most people aren't indifferent to the plight of Palestine they are just afraid of what will happen if they speak too loudly against the status quo. "Raising awareness" stunts like this are years too late. There is enough awareness. Moving the "genocide bad" people to "israel is a terrorist state that has no right to exist and anyone who disagrees deserves to burn" is the only useful purpose of the propaganda war. Greta getting arrested again doesn't do that.