... The amount of blocks I've seen with Galvanic corrosion / failing plating in less than a year of use is nuts.
I had a distilled water loop with a silver kill coil and nothing in there that could react and cause early onset galvanic corrosion. Within 6 months the nickel plating on the CPU block was peeling away. I wouldn't touch anything EK again. ...
Could it be the silver kill coil or coolant? Can you link the posts you see with galvanic corrosion. I don't use one so I can't compare, but I don't have any issues on mine. (I'm using ek 3.2 pwm ddc, ek supremacy, distilled water + ek cryofuel, and dazmode lp240 rad). The use of good distilled water is key to preventing corrosion.