Power is OK. I checked it out. I even looked at the electrical sine wave on an oscilloscope I have and it looked clean. Nice clean 60hz sine wave.
This appears be a misunderstanding as the power that's most important is the 5Vdc and possibly the 12Vdc inside the PC, rather that the mains power. I suspect few, if any, SSDs use the 12V.
The DC should be stable and pretty clean, possibly with a few mV of a high-frequency ripple from the switcher.