This is absolutely true, when you have been sharing a certain message for a while, you might get tunnel vision as they call it and finding creative ideas might get harder at this point. Stepping back for a moment is a great opportunity to see what you have been doing and to understand that there are an infinite amount of other subjects you could be learning and talking about instead.
I think the great thing about content creating is not necessarily about the people you serve the content to in the first place, what's also really important is how you develop as a content creator and what you learn by doing so in the process.
Just some thoughts that came up.