We have updated our user guidelines and made it clear that all types of ad blockers, bots and fraudulent streaming activities are not allowed
Spotify is like any other business, in need of profit. But profitability has been extremely difficult, so much so that it only booked the first profitable quarter in the streaming service twelve-year history. It's a huge time to lose money quarterly after the quarter.
So these changes are designed to achieve two things. Make sure Spotify receives all the money it should (no ad blocker) and prevents Spotify from paying out any money it should not (no fake streams). Unfortunately for Spotify, in addition to browser blockers, there are apps for Windows and Android that are designed to block streaming service ads. If you use any of these options, you should probably stop immediately so your account will not be terminated.