To be fair, the atmospheric engine was just barely practical for pumping water out of mines. Newcomen sold over a hundred of them, but they were rapidly replaced by Watt engines or retrofitted with a new cylinder and a separate condenser. The atmospheric engine was however far too inefficient for use as a locomotive engine, or as a replacement for water power in most industrial applications.

Watt engines were also atmospheric engines, but the rest of your comment is correct.