Ask HN: Why has ghosting candidates become so prevalent

I don’t really understand why or see the reason behind why companies ghost, especially after take-home challenges. I had an opportunity I was really looking forward to, and they didn’t give me any feedback or anything about the challenge. I thought I had done a pretty good job on the coding part, maybe not as well as I could have with the system design. But I didn’t receive any feedback at all? It’s slightly soul-crushing, but it seems to be pretty commonplace, and I don’t really get why.