I get the cynicism, but this is part of a much bigger, broader awakening in our culture right now. Starbucks didn’t offer implicit bias training in the past, because almost nobody offered implicit bias training.
The biases and unconscious racism that many people display every day simply wasn’t recognized by the dominant culture for the last fifty-odd years. You can’t blame one coffee corporation for that.
The difference is that now we’re becoming more and more aware of these issues — and more and more able to record and publicize them when they happen. I applaud any organization that is waking up to this problem and trying to deal with it constructively.