Recall that GLP-1s were originally designed as next-generation long acting insulin modulators; they're a form of passive control. The CGM gives you data to act on, or at the very least observe. I find, from my experience wearing them as a person without diabetes, they give really interesting insights into my own life by giving numbers to stressful moments, which can be good insight to have. That's called stress induced hyperglycemia. Everyone has a unique and continuously evolving glucose system, so YMMV.