A few of them did just that at the beginning, but sadly the bravado to do anything other than post dried up after a barracks in Lviv were hit with a missile.
Unrelated but that reminds me of the cope around the hypersonic missile Russia has, the Kinzhal. The US was coping about it (they don't have any yet) saying "technically all ICBMs are hypersonic at some point during their flight" lol
the war in the ukraine is a form of contradiction in capitalism, war is a form of capitalistic competition - right wing extremism grows when there is a low quality of life iirc as people wish to return to a time where everything was perfect and so they need to destroy the out group to get there (the time where everything was perfect doesn't exist).
so if they can have a wonderful life after the war then yeah sure, you can limit it to anti Semitism.
but regardless of who wins the ukraine war, you can imagine that the despair in both nations will be substantial.