Monthly Active Users (MAUs) and Daily Active users (DAUs) are overused as a metric. MAUs and DAUs were popularized with social media businesses, which sell user attention. If you’re doing that (i.e. selling attention to advertisers), then MAUs and DAUs align with your business goals. Active Users directly drive that attention, and so are related to that kind of business’ strategy.
But many businesses don’t sell user attention, and so MAUs/DAUs are not as useful. SaaS companies, for example, use LTV (customer lifetime value) and CAC (customer acquisition cost). Those #s are tied to your strategy. Using MAUs to measure a not attention economy is at best a loose proxy for use, and often misleading.
Should you prioritize MAUs and DAUs? Probably not. You should focus on your customers and your strategy, and come up with a metric that measures how well you are doing at that.
Your business/strategy is too important to just default to what worked for some company or person that’s different from you.
PostScript: I fully expect some responses that will point out some reasons MAUs can sometimes be useful. Sure. They can. I did not say “MAUS never useful”. I said “MAUs are overused to the point of being borderline harmful or misleading”