"New gravity particle" - I wonder what is the point of inventing such things? Does it have any meaning at all? I suspect it is us clinging to our bias of human

"New gravity particle" - I wonder what is the point of inventing such things? Does it have any meaning at all? I suspect it is us clinging to our bias of human perception. The only reason it could be useful is maybe if "particle" implies a certain set of behaviors all particles have in common? To make it clearer: what I mean is that the notion of a "gravity particle" only gives us the illusion of something we can grasp, whereas presumably there is no such thing in reality. Edit: downvote, why? It's a serious question.