As you have been told, printing is not necessarily good, especially if it is excessive.

The rise in the price of bitcoin, which is generally measured by the USD pair, has two components. The first is the rise in demand, because people realise the value of bitcoin and want to buy it. Given the limited supply of bitcoin, the price rises. Secondly, there is the devaluation of the dollar, which is of less interest to us. Because of the first factor, you are able to buy more and more things with the same amount of bitcoin, but not because of the second.