I had a similar experience - one of my songs was soft rejected, but it was a “hard” soft if you will as the reviewer was pretty straightforward, and the issue wasn’t something technical - there were musical considerations. And while I didn’t necessarily agree 100% with what they said, the general idea was spot on - I hadn’t been diligent enough in my production, and it wasn’t ready for prime time, and frankly, in that case I was thankful for the chance to improve it after listening again, trying to be as objective as possible.