The problem with race hustlers in general and joe, in particular, is that they really do not have a heart for the topic, especially after so many years in the business. So, they repeat a handful of proven or approved phrases as a form of virtue signaling. In his case, we're not too sure what the term "virtue" implies, but joe assures us that, whatever it is, he has it. When he ad-libs, such as with the "you ain't black" line, although the intention was probably to convey a sense of familiarity, the effect was not good. In an eerie sense, Kamala comes off the same way. Both appear to be acting.