Providing concrete advice to allow a colleague to improve has more impact than generalised feedback. A subtle but essential distinction for when someone asks: what did you think?
Conventional wisdom says you should ask your colleagues for feedback. However, research suggests that feedback often has no (or even a negative) impact on our performance. This is because the feedback we receive is often too vague — it fails to highlight what we can improve on or how to improve.
https://hbr.org/2019/09/why-asking-for-advice-is-more-effective-than-asking-for-feedback