Maybe

I believe that one should leave those platforms for personal reasons. Not as a statement to those companies.

I left because I don't like being tracked or being forced to accept being tracked. I did not leave because I wanted them to stop tracking their users or to show them that i don't like them doing it.

Imo these companies won't change the way they operate and even if they did, I wouldn't trust them to have done so. They will always find loopholes and workarounds to get to what and where they want.