It's not actually free. Mining in this moment is not always profitable and the impact due to the amount of energy is relevant. These are problems that the crypto ecosystem must solve to evolve.
You don’t pay for the coins you get from mining (although it costs you), insteaded you’re rewarded. It was meant to be a reward like a gift for keeping the system checked. I think the more we see mining not just as a profitable venture, the better we understand how a decentralized currency should work. I hope Minedblock realize this too.
I don't know if we're actually understanding eachothers, but if mining was just money for free we were all billionaires. It has a cost in terms of energy and CPU capacity and, in a bearish market, is not always profitable.
I hope that the market will start to grow again and I hope this project can achieve its goals, but talking about mining as a magical activity that creates free money seems to me not exact. With the greatest of respect obviously.