I guess he hasn't spotted that the UK Conservative Party has already elected three women Prime Ministers and that Boris Johnson surrounded himself with ministers of various ethnicities. Whoever the party's members think will do the best job as PM (sometimes wrongly). Not what colour is their skin.
The US Liberal model involving endless complaining about racial victimhood just engenders more of it.
One day, folks like Joe will think about this and realise they had it wrong all along. Don't whinge. Look for talented people. It's no surprise the UK's Conservative Party has been open to new leaders of every stripe. It's been going on since 1979! As is often the case, the US is far behind the opportunity curve.