And yet you've provided absolutely nothing to support that assertion other than your say so — something that I encounter all too often from guys like you. It's not just the APA that supports connecting with and expressing anger about discrimination as a healthy way to deal with the stresses of living with ongoing oppression - it's the prevailing mental health model (at least in the US). If this is indeed "ferociously debated" I'd like to see some evidence of that.
"Whether you’ve experienced a blatant racist attack or suffered one or more micro-aggressions, it’s normal to feel angry, upset, or hopeless. It’s also normal to want to bottle up your experiences of racism or try to pretend that they haven’t affected you. But keeping painful feelings to yourself will only amplify them and adversely impact your mental and physical health. The first step to healing is to openly and honestly share your experiences with others."
