Don’t hurt yourself, use proper lubrication.
Don’t let it distort the reality of what a human relationship is like. Most of what they do wouldn’t be pleasant for both parties in real life, it’s exaggerated for the camera.
Don’t let it ruin your in-person relationships, or job, or ability to function in society.
As long as you keep those things in mind your boundaries are your own to set.
Are you able to download your purchases? I feel like the answer is “no,” but if they were serious about your library being “yours” downloading your purchases would have been part of their service plan from the start.