Apple uses water damaged boards in Apple refurbished devices
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I buy exclusively refurbished stuff from Apple. Never had to use the 1-year warranty (which comes free with every refurb), but I sleep better knowing it's there.
If a reworked unit doesn't crap out at Apple's bench test, and it doesn't crap out after a year of use, and you save 10-20% off retail, what exactly is the issue?
Also, damage does not preclude repairs. If you merely cleaned radios after a flood and then they worked fine for years, you did not repair them, you cleaned them.
These problems can happen to any company but as Apple is doing its best to hinder the work of 'unauthorized' repair services they better be sure their authorized repair services is up to it.
No Apple fan here (actually the opposite), but I'm with them on this.