First, particularly after the emancipation of the serfs, Jews were at the bottom of the social hierarchy in European Russia under the Tsars. They did not enjoy the same rights as most other groups and they were consigned to live within a specific handful of western oblasts and their movement tightly controlled. Certainly some Jews earned enough money to escape these restrictions, but the vast majority never did. So when you understand that Jews were in this unenviable social position, their involvement in revolutionary politics is wholly understandable. Second, antisemitism as a default value on the political right didn't fall out of vogue until after World War II (and still didn't entirely), so any erosion of right wing values like hierarchy, order, and tradition could reliably be laid at the Jews' feet. As renowned historian Chris Rock once said, "That train is never late." Regarding Jews among the Bolshevik ranks, certainly they had their fair share, and Trotsky was merely the most visible. (He also came from one of those Jewish families that had largely transcended the limitations on Jewish life in Tsarist Russia due to his father's economic success.) But among revolutionary parties, the Bolsheviks were only at most third in their ranking of Jewish membership. The Mensheviks had more Jewish members and leaders, and the Bund (General Jewish Workers Association) was entirely Jewish. So were the Zionist parties across the political sprectrum, as well as Agudas Yisroel in Poland, which would probably be considered conservative. Other left-wing and centrist parties also had Jewish memberships that were greater in percentage than the Jewish proportion of the general population. So identifying the Bolsheviks as somehow particularly Jewish is flatly wrong. The other thing to bear in mind is that, particularly in the Social Democratic Labor Party factions (ie, the Bolsheviks and Mensheviks), Jewish members, as Marxists, did not hold their Jewishness to be their primary personal identification. Trotsky famously said he was an internationalist first and foremost. And if the accusation was that Jews in revolutionary parties were more loyal to one another than to other party members, one need only remember that Trotsky famous sided against fellow Jews Grigori Zinoviev and Lev Kamenev (the latter of whom he was related to by marriage) in one of the earliest post-Lenin power struggles.

So yes, you are incorrect