Wanted to mention in case you're not aware and maybe there's some tool somewhere (or some way to configure a screen reader?) so that you can keep your simple zoom workflow but still benefit from the ARIA alert pattern.
For a small regional golf court chain who want to build an online tool for reserving tee times? They most definitely won't have the budget to do things entirely properly.
There was some discussion in the article and elsewhere in the thread about how a toast with an undo button could be a very useful interface pattern. It wouldn't work for me, so I would hope that UX designers that want to use toasts would also design in other means to find and execute an undo action.
For you, my comments reinforce that toasts are "good UX" when they contain redundant information. I'm warming to the idea. In parallel, for me, this discussion is reinforcing my intuition that "actions and feedback as close as possible to the area of interaction" should be considered the primary vector.
The issue with the not seeing toast notifications is that in some apps it’s the only true notification that the request went through to the server so missing them when they failed for whatever reason is rather annoying
In other words, it's a crutch that is often taken when there isn't enough budget/resources to make a proper UI (Or enough care/love/interest/skill).
I have definitely myself gone down the quick path of implementing only server side validation + toast service for projects where the customer just does not have the budget to do things entirely properly.