For a first-hand look at the situation then read “Mischling, Second Degree: My childhood in Nazi Germany” by Ilse Koehn. Her father’s mother was Jewish, and they managed to avoid deportation because her father was a civil engineer that the Nazis decided was too useful to kill. Ilse was brought up not knowing she was part Jewish.
I suspect that number of 150,000. There were some, sure, but 150,000? Sounds like somebody was looking for click-bait and you fell for it.