The Jews have been trying to claim Columbus as one of their own for decades now. Based on their record of veracity, I'd say that in itself is strong evidence against their claim.

Also I note that 1) "daring explorer" is an unlikely occupation for a Jew; 2) Columbus looks nothing at all like a Jew in any of the portraiture I have seen; 3) Columbus himself denied it; 4) Columbus said he approved of Ferdinand and Isabella's expulsion of the Jews; and 5) the best these desperate "researchers" can come up with is the claim that he has mitochondrial DNA that was "not incompatible" with Jewish ancestry -- hilarious, what other ethnic groups is it also "not incompatible" with? Dozens? Is it also "not incompatible" with White European ancestry? Since they don't say, I'd bet a few thousand sats that it is.