Apple lines perimeter of the nand chips on modern mac minis with an array of tiny capacitors, so even the crazy people with heater boards can’t unsolder the nand and replace them with higher density NAND.
This is normal. They are called decoupling capacitors and are there to provide energy if the SSD requires short bursts of it. If you put them any further away the bit of wire between them and the gate turns into an inductor and has some somewhat undesirable characteristics.
Also replacing them is not rocket science. I reckon I could do one fine (used to do rework). The software side is the bugbear.