It’s not “less than meaningful” if you understand wet as a relative term. There can be a normal level of wetness where if it is exceeded we then call that thing wet, and if it’s under that threshold we call it dry relative to the norm.

If you somehow came from a perfectly dry environment, yeah, you would probably consider our world pretty wet. You would have a pretty hard time describing your experience to others if you couldn’t use the word wet to do so. The word doesn’t lose meaning just because you go all reductio ad adsurdum with it.