I suppose if you define "conscious" in that way-- "this atom/electron/whatever has the
possibility to be part of a system that thinks/reasons/feels/perceives"-- then yeah, panpsychism is vacuously true. But that's a wild abuse of the word "conscious" that is nothing like the its understood meaning: if nothing is not conscious, then the word is meaningless. When we try to define consciousness, we're obviously looking for the "thing" which we have but rocks and water molecules plainly don't. If you don't want "consciousnesses" to be the word for that thing, fine, but serious people are just going to ignore you, invent a new word for the thing, and carry on the original search.
And when I talk to panpsychists, I get the distinct sense that they know this and they're learning on it, and by doing so they're motte-and-baileying everyone else. They start out by saying that "electrons have consciousness", with the unspoken implication that consciousness means the popularly-understood ability to reason and plan and have subjective experience, even if they won't say so. And then when someone scientifically-minded comes along and points out that that's absurd, they retreat to a new definition of consciousness that is true but pointless. We're trying to really solve the hard problem here, not handwave it away and declare victory.