Funny you mention Jabotinsky. Jabotinsky's beliefs were formed from the proof playing out in front of him, that not even the Ukrainians, the second largest ethnicity in the Russian empire, could get even a semblance of fairness out of the Russian empire. If the Ukrainians failed, what chance did the even fewer Jews have? Trying to understand Jabotinsky without understanding the world he was born into is like trying to put modern beliefs onto Alexander the Great.

If you were a Jewish person of ordinary means, certain engineering paths were completely barred to you in the USSR. Keep in mind, engineering and math were the most prestigious forms of STEM for the Soviets.

So are you trying to claim the Doctor's Plot case, the assasination of Solomon Mikhoels, the rootless cosmopolitan campaign, Soviet "Zionology", that all those just didn't happen? People were around for those you know.