SSDs (many of them at least) actually do make little noises when they're busy! I noticed my PC was making a noise, and I went on a wild goose chase trying to track it down. (Was something wrong with one of the fans? Was it coil whine from the GPU?) I didn't immediately suspect the SSD, because everyone claims they're silent. Then I finally realized the noise corresponded with disk activity, and I found a YouTube video confirming it: https://www.youtube.com/watch?v=KS-BHI667po
Yes, but that noise has a frequency that is way higher. It is the same as with new motors/electric motors. While it is technically true, that the loudness of the sound is less, they are more annoying, so you trade a fine sound that also serves as an easy diagnostic, to a obtrusive noise, that also conveys less semantics.
