Your comment is a curious one. It's as if you are saying (maybe or maybe not) that Dr Cain has no right to voice his impressions and opinions. Who, then, has a right to speak his or her mind? Only woke people? Only racists?
By saying "grow up," what are you trying to achieve?
While I do not agree with everything Dr Cain writes, why can't we just engage in an exchange of ideas instead of resorting to nastiness? It doesn't make sense, does it?
We don't all agree or have to agree, but when we begin shutting one another down then what has been accomplished?