You commit a single sin against God and the sentence is death. You lie, steal, think about lying, think about stealing and the sentence is death. The only thing that saves us is the Grace of God. Forgiveness given by Him. People think that a punch in the nose is too severe for an insult given? They have no idea of what is coming. We do them no favors by pretending that there is no justice and only a legal system where people can buy their way out.
Equating insults to each other with insults to God seems quite a stretch.
I don’t find a physical attack an appropriate response to a hand gesture. You apparently do.
We at least agree on God’s Grace the only source of salvation.
God’s Peace be with you.
John 14:27