Obsidian has 2 main advantages to me.

First you can switch from WYSIWYG to text editor instantly.

Then you have an outline where you can manipulate your “markdown blocks” [i.e title and its content] by drag n drop. Or extract a “markdown block” as a new note, and leave a reference where it originally was extracted from.

And then [the killing feature], it displays the content of a link, web link or internal link, as a [kind of] iframe, if you prepend a ! to the link.