If the point is that a third of Israel’s population being of Soviet origin creates an espionage risk it is well-founded.
It is a huge risk for both sides.
As sure existential security risks I think just the opposite is the case.
With every over Israel’s citizen having multiple relatives in Russia and vice versa I think the risk of war is actually lower.
War is ongoing. Only the battlefields change.
Do you now understand why I believe neither the author nor the article are antisemitic?