Sure. So what? That's called "performance." It's a human activity. Some
humans are better at it than others.

The bottom line is the delivered product. If you can't hear it as a
listener, then there isn't a problem. Complaining about Autotune being used
in a way that cannot be detected is like complaining how immoral it is that
hookers you never saw may have been in the studio. Your issue is with the
principal, but as long as no one tells you, you probably won't know either
way. In fact, if you have any favorite modern recordings, I bet some of them
have been Autotuned to some degree.

-S