True, and so some may still opt to install the specialized all-or-nothing question type.
For me this is not a real issue because I don't use the question bank ui for creating questions, especially mc questions. I create them in excel which I set up to compute all the fractions automatically and then bulk upload into the question bank. I use the ui only for fixing typos.
But I suppose many others who do use the ui may still appreciate the AON option in the core question despite the somewhat awkwardness of its ui. And the ui may get better in time.
Apropo ui, consider the following.
Here is what I get in the browser, top to bottom, when editing the mc question:
That's a choice and a half per visible screen. But with a bit of tweaking we can do much better:
That's four choices per visible screen, and needless to say, without all these editors rendering themselves the page loads much faster.
And if you want to edit the content of a choice you can simply click on the plus sign to open the respective editor:
Then you can click on the minus sign to close it and move to the feedback or other choices.
We can save even more space by omitting the fieldsets and rendering the elements of each choice in one line.