Because people know having a "distinctive handle to a specific useful thing" is useful, and it doesn't matter what the actual word is, as long as it's distinctive.
Same reason that Amazon has so many slop brands, they don't need a good word, just one that's novel that they can trademark.
The acronym is a kind of jargon, a compact package of meaning that is fast to communicate but blossoms into a richer understanding in the right listener.
For example, PRD is a magic word. It means a distinctive set of practices, uses, expectations. It is distinctive.