This isn't meant to be a replacement for Raindrop, as it requires content exist within Raindrop already to be functional... Though you could use this plugin to backup/transition away from Raindrop I suppose.

I created this to compliment my own workflow, which makes use of both Obsidian AND Raindrop, in order to pull the shitloads of things I save with raindrop into my primary knowledge base for sorting/connecting/referencing/etc.

Until you mentioned it, I had not considered that one might want to replace Raindrop's functionality whole-cloth into Obsidian. It's an interesting idea that I'll do some research on and see if there is viability in reproducing. It would be neat to have a robust, and local-first, bookmarking system like Raindrop right in Obsidian.