It solves two core time wasters for me. It helps me avoid starting from scratch on docs and it gives me a way to find gaps while comparing with other similar docs so I can make the initial versions better and move faster. Bonus is the frameworks and other references baked in are Reforge gold.
It's helpful to check whether I could make my work better through access to Reforge's expertise and frameworks. It doesn't always return something useful but so far it feels worth keeping around!