spicymaki's comment is just pointing out how some people who talk big about equality can be pretty crappy themselves, which kinda makes it hard to take them seriously.
We definitely need rules against discrimination at work and ways to deal with it when it happens. People should absolutely speak up if they see or experience discrimination.
But the thing is, real kindness and respect should be at the heart of all this. We need both the rules and people actually being decent to each other. It's not one or the other, it's both; hence the false dichotomy.
I'm not sure how much clearer I can be about it: The more loudly someone complains about racism, the more likely they are racist. Likewise the other -ists and -isms.