What usually happens when you decide to break the law in your country? Will the police come to arrest you, confiscate your stuff and have the courts sentence you jail? Or will they knock on your door and demand a bribe or just straight up steal your stuff to give to their friends? It seems foolish to continue mining it any jurisdiction where the government has clearly banned it and the consequences should be obvious. The world has existed long before cryptocurrency came along, so it is not exactly required to function in daily life, you may simply need to move into a different profession if you want to stay in countries where it is no longer allowed - these are things that only you can decide.
Assuming he runs his mining farm in some shoplot/ home on a full-scale basis and the police gets tipped off, his rigs would be confiscated by the and he would probably be slapped with some hefty fine.
In my country, it's legal to trade Bitcoins but not mine them.
