Disingenuous rubbish.
The only person disingenuous is the person who thinks that something one can convert to is a "race".
Again. People don't say, "you have the similar dna to the tribes that started the religion" they say. "Wow. you are jewish". But of course they must be misstating. So moses was misstating, and the bible?
But jews would still consider him a jew, a bad one.
It doesn't matter what some religious group considers him any more than Lutherans considering me to still be Lutheran because I was baptized long ago, the reality is he isn't Jewish and his children aren't either.
When I can convert, marry a converted woman, and have kids who are Jewish, it isn't a race. There is no "race" that even has a remote possibility of that happening it is disingenuous to suggest otherwise.