Most of the coins do not have merit, but there are PoS coins that are legit. PoS will likely result in more decentralization, not less. Cardano is aiming for 10

Most of the coins do not have merit, but there are PoS coins that are legit. PoS will likely result in more decentralization, not less. Cardano is aiming for 1000 stakepools, which is far more than the 5 or so pools that exist in bitcoin right now.