I stand by my views on rejecting birth-based adhikara vs the jivamukta. Those are our preceptors.
But I've deleted it out of respect for those who revere him as I make it a point not to attack others' Hindu gurus.
Birth and karma converge because birth is also result of karma.
But karma can also be altered via guru kripa; thus can birth. Similarly "high" birth via bad karma can fall.
Everyone is born a shudra; it is a natural state.