One thing that's important to remember is that the whole diversity/inclusivity/whatever-label-you-like movement is pretty young. It has identified a problem, but not fully understood it. And all the social engineering attempted to improve the situation should best be seen as experiments.
Another important point is that this movement is very US-centric but not aware of that cognitive bias. @Vladimir Gordeev is completely right in considering himself a member of an underrepresented minority, coming from a different cultural background. He is also right in pointing out the risks of focusing on group identities. It's not just the history of the USSR that has plenty of warnings to offer, it's world history at large.
Finally, this movement is conflating three kinds of issues that I think should best be considered separately: 1. Gender roles, which are still those of the agricultural age that lasted for millenia. The problem here is inertia, the goal of social engineering is accelerating a change that is likely to happen anyway. 2. Xenophobia, including the consequences of colonialism. These take different forms around the world and probably require case-by-case solutions. 3. Minorities that appear dysfunctional in the eyes of many, including gays, trans people, autists, physically disabled, and many more.