Google Translate accepts it, so I guess it's a word. Only one Google result though (this page).

Google Translate just understands how German allows "on the fly" compound words. E.g. it knows "Überpräzisionsberichterstattunghundhund" is " "Over-precision reporting dog dog" not because it's anymore a word than other nonsense but just because it's what it would mean if you made it up.

Sometimes you just gotta love the German language. We joyfully smash words together to make new words, like a linguistic particle accelerator. :-)

Would be possible but seems overcomplicated. Why not just "Überpräzisierung"? This is actually in use.

Maybe, haven't heard it IRL though. As opposed to the more vague 'Übergründlich'.

That’s when someone takes ages to e.g. clean something up because they are using way more effort than necessary.

As a German, I won't say "doesn't exist" because it's possible of course. At best, people would think it some term from legalese.

The opposite thing though, "really roughly approximately (and couldn't care less how precise)" (you get what I mean) is often colloquially used in German, under the term "Pi times Thumb" (Pi mal Daumen).

So yes you can say "250tsd anno 1988 sind pi mal daumen 600tsd heutzutage".