So why do we not drink cloudy water? Hmmm impurities? Well while those 'impurities' making your wine cloudy or precipitating out of the wine are not only unappealing to the eye, they are an unknown substance that, while it may not harm you, it can give some unpredictable flavors or smells to the wine if left in there.
Some things like hard apple cider are fine cloudy but the adjective cloudy is not not considered a complement when used to describe a wine.
When I see cloudy wine or sediment the word dregs comes to mind.
dregs
dreɡz
noun
The remnants of a liquid left in a container, together with any sediment or grounds.
"coffee dregs"
synonyms: sediment, deposit, residue, accumulation, sludge, lees, grounds, remains; technicalresiduum
"The dregs from a bottle of wine"
The most worthless part or parts of something.
"the dregs of society"
synonyms: scum, refuse, riffraff, outcasts, deadbeats;