I read their whitepaper they want to be as similar to bitcoin but be cheap. They consider themselves the coin that can fulfill the vision of satoshi as a decentralized electronic payment. Bitcoin due to its limited quantity has rose through speculation. Kaspa wants to be a daily useable merchant coin. Kaspa in some language means Silver, they want to be the silver of crypto industry where bitcoin is the gold. But there are already a multiple of mineable coins that claims to be silver or that wants to be a merchant coin, I don't see why kaspa would be a special one. POS coins are also proving themselves as safer as POW and they have no energy and hardware needs as POW coins have.