Fun fact: In Canada, you are legally required to file your taxes if and only if you would owe taxes. If you would get a refund or there would be no refund but no taxes owed either, it is up to you whether you want to file your taxes or not.
That being said, de facto you are correct. The CRA will chase you if they think you owe them money, but is happy never receiving your returns if they owe you money.