My comment is really similar to what's already been said, this reads a bit like a "I don't really want to waste my time so neither should you" post. I mean nothing wrong with that but a bit negative and sour then I personally would like. Plus I think the entire spirit of the competition was a bit lost on this person.

Solid case in point, the u-net came to prominence from a medical kaggle competition. Was it a "useful" model? The author might not be wrong in saying the model wouldn't work as well in the wild but I would definitely say it was useful. The unet is still a very commonly used architecture