>>> But in Eretz Yisroel more Jews have been killed in the last 75 years than in any time in history since the Churban Bayis Sheini.
That doesn’t seem true. Of course when Eretz Yisroel was desolate and almost bereft of Jewish inhabitants very few Jews were being killed there. Which was the situation for the majority of the time after Churban Bayis Sheini. But when there was a significant Jewish population there was plenty of persecution. For example
More Jews died in Churban Beitar than in the entirety of the existence of the State of Israel. That was more than 50 years after Churban Bayis Sheini
Rav Sheria Gaon and Rav Hai Gaon say that the persecutions in Eretz Yisrael at the time of the compiling of the Yerushlami, were so intense that the halachic discussions ended abruptly and did not reach their complete conclusion. Therefore we pasken like the Bavli over the Yerushalmi
etc.