The definition of the word, that everyone is probably familiar with, strongly disagrees: https://www.merriam-webster.com/dictionary/plummet

    Plummet:
    
    1. to fall perpendicularly
    
    2. to drop sharply and abruptly

Or, Google's scraped definition from Oxford dictionary:

    fall or drop straight down at high speed.

If you google "satellite plummeting", you'll notice that almost all of the results also include "fireball", "burning up" and/or "reentry".