Focusing on identity politics won't do much to solve wealth inequality. Wealth inequality is caused by class-based policies. Furthermore, if identity politics becomes the main focus, it alienates much of the public. Class politics has a much larger common interest.

There's a lot of cynicism to be had when countries like South Africa get rid of apartheid but then the country goes ultracapitalist, resulting in extremely high unemployment and inequality.

Also the reason identity politics is discussed more is because the rich tolerate it more. They don't care that much about it because for most of industry it doesn't effect them very much. This is in stark contrast to class politics, most of the scholars that critique class don't get much mainstream media attention.

It's also the reason why mainstream discussion of identity politics is focused more towards things like job equality rather than the seriously egregious examples of racial oppression like the mass incarceration system, which has produced over a million slaves, legally.