Impressive outrage over, "the heterosexual, white male having it tough now since the women, people of colour and non-heterosexuals have the audacity to voice their opinions in public". I'm sorry if this has come as a shock to you, but the world is very slowly redressing the imbalance of people having opinions and being in a position to get them heard. Expect more in future.
Assuming you do genuinely believe the absence of nominations for people of colour is down to simply, "maybe they were just rubbish this year, so they didn't get nominated" you're either accidentally of wilfully ignoring the imbalance of leading roles, directors, producers and other key positions offered to/held by people of colour in hollywood film production.
What % of hollywood movies were released this year had a lead black actor or director? Do you think this is more or less than the % of US population who are black? Do you think the difference between the two figures is 1 or 2 percentage points or perhaps higher? Do you think that difference is down to a fundamental difference in ability to be a good actor or director by one demographic over another?
Even if 1% of all films made are good enough to be nominated, the lack of diverse output including cast and senior production staff of colour, means that fewer of these films are likely to be nominated for awards, with even fewer winners. You could apply the same principle to British TV, corporate boards, politicians and see the same effect.
The only arena where there seems to be anything approaching a meritocracy is sport and even there you only have to look at the non-playing roles to see the same the exact same imbalances.