Your question is Separate PMF from Short-Term Engagement. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You are the PM for a consumer music creation product. Your team has launched a new feature, and usage jumped right after release. Some people on the team think it is a real sign of product-market fit, while others think it may just be a novelty bump. You have been asked to judge whether the feature is creating durable value.
How would you evaluate whether a new feature is creating real product-market fit or just short-term engagement?