They way I understand the link you provided, a person ( born Jew or born gentile ) who follows the law of Moses IS the Jew ( the one with a Jewish Soul ).
Let’s put it in a table format:
1. BORN JEW, DOES NOT FOLLOW THE LAW OF MOSES
2. BORN JEW, FOLLOWS THE LAW OF MOSES
3. NOT BORN JEW, FOLLOWS THE LAW OF MOSES
4. NOT BORN JEW, DOES NOT FOLLOW THE LAW OF MOSES
As I understand it, only #2 and #3 qualify as TRUE JEWS ( the ones with the Jewish Soul ). The rest do not.
This disqualifies a huge chunk of the population of Israel then.
Sounds a lot like the arguments of the “trans” crowd. Hey, the male converts even get a little surgery when they “transition” to being Jewish too :)