I wish del.icio.us was still a thing.

It more or less is. It was purchased[0] by the one man operation Pinboard.in (by https://news.ycombinator.com/user?id=idlewords), which has most of the same functionality.

I was a Pinboard user and fan for many years, although I now have some concerns over the current health of the project, and have since moved away in favor of self-hosting Linkding.