My two cents is that other than sharing the mic of “next-gen PKM”, Craft and Obsidian are very different tools, and each person’s optimal one will depend on how their brain operates.
Craft’s Major is formatting your information. This is clearly helpful in organizing it. After all, we all find a wall of text less digestible than punctuation, paragraphs, and pages. Craft also has a Minor in indexing your beautifully formatted information.
Meanwhile, Obsidian’s Major is indexing your information, with its flexible pane layout, automagical backlink rewriting when you shuffle your vault around, and custom view scripts. And, Obsidian has a Minor in formatting that index.
Would your brain reclaim more compute power if the indexing was made easier for you, or the visualization? That is the question to ask.
Personally, I get more value from an indexing co-processor. So I went with Obsidian.
I would add, too, that leaving your data in your hands makes Obsidian lower risk. And, thanks to Obsidian’s rabid plugin community and due to Craft’s business model, I believe Obsidian is likelier to add all of Craft’s selling points one day, than Craft is likely to add all of Obsidian’s selling points, even if Craft has debuted covetously polished and funded.