A quick thought - by evoking the grandson of the Prophet Muhammad and the battle of Karbala in the 7th century.....Sinwar is obviously fusing religion with Nationalism in addition to acts of violence.
Although very dangerous, that kind of ideology can be very effective especially if the person transmitting that message is a powerful public speaker, charismatic, inspires widespread support, etc.
He knows exactly what he's doing and, crucially, he knows full well what the cost to Hamas, Gaza, West Bank and the whole Middle East Region would be.
If he succeeds in his clear objective with his messages, then he and Hamas will massively escalate the conflict. It won't just affect Gaza anymore.
All eyes on Sinwar, the Hamas leadership as a whole, the Hamas members and anyone else who supports their aims.
I don't like to predict these things as a hell of a lot can change. But I still believe Sinwar and Hamas will fail to achieve their propaganda aims in the long run.
Palestinians, Israelis, the whole Middle East and the West will all benefit from the defeat of Hamas in every way possible.
So I say as I have before: Free Palestine & Israel from Hamas!
Ideologies can be discredited and military capabilities can be seriously degraded which is what will create space for a peace process to make significant progress.
Despite widespread public perceptions, especially in the Western world, this is ultimately how successful peace processes are concluded. IMO, the concept of constructive ambiguity won't work in the Middle East and is massively inappropriate to pursue in any event.