Interesting take. Do you have any ideas how should society address that feeling of oppression?

Edit: fix typo

That is a fair question. Frustratingly, I think an important part of the solution is actually pampering and providing disproportionate help to the "historically privileged that think the recent equality is oppression against them". After all, empathy is the most important thing, even if the person you are giving it to is particularly bad at showing empathy back (and refuse to acknowledge the structural privileges they have had).