We see this with Recaptcha where when it was first launched, some news sites praised it as making good use of what would have otherwise been wasted human effort. But eventually I started to see negative comments along the lines of how Recaptcha is just extracting free work to train self driving cars, nevermind the part about stopping bots. Since Recaptcha is now sometimes non-interactive, I am not sure if that data is still used for training, other than to improve Recaptcha itself, but the negative sentiment still holds whether that data is used or not.