I understand that investment banking has always been like this. Why now, the complaints or attention?
The broader culture has shifted so that people are not considered weak for refusing to put up with workplace abuse. It is no longer a career-killer to blow the whistle on your current employer.
I'd be careful with that statement. During my time in the reputation management industry, I was working on a joint taskforce with our social media team on a case of whistleblowing. The said whistleblower was successfully deplatformed, then promptly labelled as a hate-entity, ultimately leading to them being fired by their current employer due to the perceived fear of association.
I would recommend anyone who wants to whistle to exercise caution and practice appropriate Opsec measures.