No, you were given a piece of a worthless token by the mining pool. If you ever want to get anything with that worthless token somebody else has to lose money. That somebody makes the bet that another somebody will be an idiot and lose more money so he can get his back.

And that money came from someone. You can’t win in crypto unless someone else loses. Typically it’s vulnerable people wishing for a get rich quick hack who lose.

It was until the authorities learned how easy it is to connect transactions to actual people.