Delicious was cool because of the constant streaming of links and things that I was able to discover back then. I would sit there and just click on links, finding good content

What's the superior phase of content organization now?

LLMs.

For me it was always: Google, YouTube, Reddit and forums. There are also niche sites that cater to certain groups and interests like Steam and Twitch for gaming or IMDB and Rotten Tomatoes for movies. There is no universal content discovery platform or engine(besides maybe Google).