There are many interesting new technologies out there. And as a manager, you may want to attract and hire developers with these skills.
But while doing this, you may have forgotten what actually keeps the light on; a codebase written in C that only one person knows.
No amount of front end developers will help once this person is gone.
By always prioritizing — and internally praising — new initatives, you are communicating that the core business is not imporant.
So, as a manager, make sure you understand the business you are in. Whether you know it or not, you are responsible that the legacy codebase gets the love and care it needs.
It doesn’t help if your product can integrate with a thousand other platforms if your backend isn’t running.