Discuss whether equality in hunter-gathering societies are of any relevance to 21st century society

I would say that equality in hunter-gatherer societies has a huge implication for the modern world.

The hunter-gatherer societies were the "original" societies, to which the humans evolved and the finding that the societies were much more egalitarian (both in terms of gender equality and social class equality) means that people cannot claim that inequality is somehow "natural" - it supports the need for equality in the modern world.