I like HN for what it is, I get to learn form a variety of topics I wouldn't have encountered otherwise. Discover dev was made to solve another pain point - I prefer tech only news, like a bunch of in depth articles without any commentary.

The idea was that engineering teams all over the world produce some really great content on their blogs, but find it hard to get any traction given all the SEO optimised blog spam, so I wanted to create a resource that would promote the good articles to those who seek it. Later I also expanded to include a couple of tech publications like Hackernoon, code mentor, etc (but you'd be surprised at the number of blog spam and blockchain articles that get produced there - I filter out all but the interesting / in-depth ones).