Syrkin's sentence should not be hard to parse. He is saying that Palestine's native population must be evacuated to increase the percentage of European Jews. The Nakba accomplished that in 1948 by expelling over 80% of the native people from the land that Israel seized with superior force.
The combined Arab armies were smaller and weaker than the Zionist forces, and they did not attack until after the Zionists began committing war crimes like Deir Yassin. Their goal was to protect Palestinians from further slaughter.
Your final paragraph is the proof the facts are not on your side. People who are right do not need to rely on insults.