How many Jews do you think are still in Ukrainian ne? I've see numbers varying from 40, 000 to 340,000.
I would be surprised if there were even 10,000 Jews left in the whole of Ukraine, and that is a very generous figure...
Ukraine was a very tempting place for some people... Much lower prices than the west, inexpensive rent or real estate (not to mention that what was built there under Soviet times was also of much better construction than the west), easy women...
Yes, tempting... But as was stated - a nazi country.
If we include economic migrants to any country, we can easily inflate the figures... Why not imagine Goa, India is a Jewish city, since so many Israeli youth try to live there after the anrmy (and then leave when their money runs out).
But let's be realistic: The Jews of Ukraine were already greatly diminished after the many Soviet purges and cultural upheavals. Whatever Jews were left there after '91 either left or have passed by now, and what remained before the current war is simply the framework that was set up to facilitate the spiritual needs and the emigration of those unfortunate remnant survivors.
So who composes that remant "framework" so-to-speak? The Lubavitchers and Lithuanian Jews who were involved and their children, the odd tourist Jew who may have settled there for some reason (I met such a man in Crimea), and also some stragglers from other hassidic sects who see the opportunity for "competition" and have established a presence there (Breslov, for example). But the majority of these so-called Jews are those who orbit this Jewish presence - if you can call it that: The kids who oligarchs who are overwhelmingly not Jewish, Judeophiliacs who are employed by Jews, other non-Jews who are allowed to associate with the group out of mercy because they have a Jewish father (but not necessarily an oligarch).
In my estimation, even the status of real "Jews" was questionable after 1991. I say this because I see many of these Jews where I live (a western suburb that became overwhelmingly Russian after 1991), and they absolutely don't want anything to do with Judaism, no matter how much you try to persuade them, even in the gentlest terms.
So those that emigrated to Israel cemented their status and removed all doubt, but the majority that came to the West have been lost in my eyes, if that means anything. Sorry if that sounds callous.