I can’t understand this design decision. What if they open the URL in a new tab, while still focused on another tab? How do you as a user know something is play

I can’t understand this design decision. What if they open the URL in a new tab, while still focused on another tab? How do you as a user know something is playing on that new tab? You’re helping yourself to their bandwidth and local compute without their consent or knowledge. Why do you think this is okay?