HTP is an internal project for the company I work for, but it could be spun up to match any topic. I called it "Planet" in honour of the old Planet software which I really miss.
The big issue I see with feeds is that you are forced to accept whatever is generated from the feeds. HTP, although it reads all the feeds, checks to see if the feed matches certain requisites before displaying it. So personal blogs (like mine) won't be included in the end result if I'm just talking about my breakfast and the cat. But it I mention something that is topical, then it will. It's an additional layer of processing that keeps everything relevant.
Add to that the ability to pick out trends and themes and allows you to focus on just those topics of interest and it starts to get really useful. In fact the Internal site was the primary source of news and details for the PrintNightmare and Log4j issues.