Are you in this profession and your realization come from where? How long you remain in the role is a myriad of factors: job preference, how you weigh WLB and meaning of audit, your portfolio and people you happen to work with, your opportunities outside.

For people in my batch and batches 1-2 years above/below. You see things like what you said. But there are people who are weak technically and left early because of other opportunities or just not suit. There are technically strong people who stay at M or longer, and may not necessarily aim for partnership.