It would be more helpful if you could prove or disprove your contention.
I can’t nor do I have the resources to prove it, but I am sure I saw on the news quite a few years back that Israel was not letting them into the country because DNA tests showed they were not related to Jews.
Of course I think one can be converted to Judaism, not that I am up on that either.
I also recall Israel basically bowing to world pressure and letting them in, also quite a few years back.