[solarkraft]

They do not do the same thing.

Logseq is an outliner (though it does have a document mode), which means a deep interaction with the document‘s hierarchy: You can zoom into blocks, collapse them (not ephemerally, it’s saved in the document) and link to them.

I’d probably use Obsidian if it had those features (since Logseq is still as buggy as it was years ago), but the last time I checked it did not.