It certainly sounds like a key point to understand.
Until now, I have interpreted the scene as reinforcing in the mind of the viewer, the initial character of Wiesler, who regarded it as routine behaviour to record any instances of citizens showing humanity, so that they could be monitored in future.
Only after this could his journey to become a decent human being begin - and I associated the short section in the theatre, where Wiesler gazes transfixed by Christas beauty, as the moment where his historical faithfulness to the Party, starts to be corrupted/changed by feelings initially of lust. Only after this point in time, could Wieslers journey begin.
In contrast, you feel that Wieslers journey had already begun.
Strapped, please don't throw any spoilers in, until we have clarified this.