It is by far the most straightforward wiki I have used. The two features I rely on most are (i) creating new pages that link back to a piece of text simply by highlighting the text and entering a shortcut and (ii) adding aliases to pages, so that each time either the page name or its aliases are mentioned anywhere in the wiki, a link is automatically created back to the page.
Using these two workflows, pages can fulfil a similar function tags do: If a concept appears again and again across many different pages, I simply create a page which is named after the concept or has the concept as one of its aliases. When I open this new page, I can see all pages that link to it in a panel that lists all back-links. I then go on to edit the page, going into more detail.
This has turned out to be the most organic way for me to write a wiki where editing, linking, and exploring works almost frictionlessly.
It got picked back up a couple of years ago, but when I checked it out recently it didn't even have dark mode implemented. I'm sure I could do it in a style configuration or something, but the bigger point is that Mojave has been around for quite awhile now, and lack of that update points to it being abandoned again.
So for me, non-starter. On Mac, being abandoned means you only last to the next major "all the old software is screwed" change they seem to do every couple/few years now, so it's kiss of death.