If it exists and is ubiquitous then it makes sense to contribute to all sorts of disparate phenomena; are we surprised that "mass" pops up in all sorts of place

If it exists and is ubiquitous then it makes sense to contribute to all sorts of disparate phenomena; are we surprised that "mass" pops up in all sorts of places? Besides, epistemologically it is very good to suspect and investigate the effects of DM on all kinds of phenomena. Then, if it does not exist, we will have many more points of reference from which to derive experimental or theoretical contradictions.