Removing bias is an objectively good thing. "You fired too many ________ people, and not enough ________ people" is not attempting to remove bias, it's attempting to hit a quota, virtue signal, or just being outright racist.

Without seeing internal company data (that a lot of the execs probably don't even have as it's across several teams), it's impossible to say for sure which one Twilio did, but "anti-racist" is going to be a dog whistle for a lot of people who will assume it is the latter.