Do you measure seconds to a customer's "Ah-ha!" moment?

For teams trying to succeed using Product Led Growth methods, are you measuring how long it takes for your customer to experience that magic moment with your product when the customer says "Ah-ha, I get it!" - Or when they take certain actions in your product that could make them think, "I don't know how I could live without this product." Would you agree if you aren't measuring it, you should make it a priority to enable the user to get to that moment as fast as possible!