You rightly question how this sort of thing can and should be done. Yes, difficult to get absolutely right.
(To expand on this, for others
This one scrolls. Ehhhhhhh. Very finicky to click the right thing (did you mean to hit a tab, or a scroll arrow?), and impossible to ever see all tabs that exist.
This shows additional items (well,
all items) in a menu. Better for discoverability, but now those additional items suddenly behave very differently.
Here, we add a second row. Oh boy. Bette for discoverability, but very easy to accidentally click the wrong row. (With tabs, this is particularly funny. Does clicking a different row bring that row to the front? That's nicer to look at, but now you're changing the order of tabs!)
And then, of course, there's "just shrink each tab":
Obviously an extreme example, but this very quickly devolves into "uhhhhh I can't find
anything in this mess".
Another bonus option is hover (please don't do this one either), where, say, you do have multiple rows of items, but they only show if you move within a certain region of the screen. Terrible for discoverability, but looks clean.
Safari I believe does a mixture: it shrinks them a little, but after a certain threshold, you have to scroll to see more details. It's a bit weird.
My understanding (I don't have such a system yet) is the notch'd menu bar
also does a mixture of strategies: it first squishes the text a little, and if that's not enough, it overflows into the other end. And if
that isn't enough, it starts removing status items.
So I find the insinuation by Quinn that Apple didn't put thought into this… off the mark.
But scrolling or similar means you can't see what might be available.
Yep. Discoverability is one of the huge benefits of the menu bar, and a scrolling or chevron approach would lose that.
One of the things I appreciated in early GUI implementations was greying out. You could see where the item exists even when not available. The tendency towards changing menu items based on context is understandable but can making learning and memorising more difficult.
Yes. I remember when FileMaker 3 (??) started removing the menu items depending on what mode you were in, instead of disabling them. It
looks cleaner, but it's more disorienting.
I don't know what Apple will do for better overflow management. I'm not sure they'll do
anything; they haven't in two decades (the status items in their current form appeared in 10.1 Puma, in fall 2001). They should totally address the bug that status items can in some cases partially be obscured by the notch, sure. But what Quinn is really asking for is a magic trick to make more horizontal space, and that has nothing to do with the notch, and isn't a problem for which a good solution exists.