One of my current shortcuts that I've taken for over 10 years dropped off the Waze radar during the summer when traffic is less. With school back in session, I am now saving 15 minutes on my commute. However, once Waze catches on and starts sending folks down my shortcut, I'll be lucky to save just a few minutes. It is for this reason I don't let any apps track my commute to work.
That doesn't seem like it would do you any good. Either other people on the road are reporting their speed and location to Waze (in which case your resistance is futile), or no one is, in which case Waze will presumably assume that there is no traffic on the road and send more people down it.
So now I have routes that I know and purposely do not share with any of these apps. I make everyone in the car turn off Waze, Google, etc. If I am in an Uber or Lyft, I will just sit there. I once shared a route with an Uber driver and it's now filled with Wazers. I also have routes where I ignore the no turn signs but Waze respects those so I don't care.