If you are discussing the macroscopic day-to-day reality we human live in, sure, all things and all characteristics-of-things are emergent in broad sense. Every distinct, discreet thing here comes out of the interactions of quantum fields and gravitational fields, so yeah.

The problem is saying "everything is X" makes X useless as an adjective.

Usually, when you talk about this stuff, you look just a couple layers of reality. For example, if your lower level is water molecules and the upper level is observation, then "waves" "whirlpool" and so-forth are emergent objects/characteristics and water is a primitive object/characteristics - never mind that water molecules emerge from still lower level processes.