I always used flash messages instead of toasts. I'm not sure if flash is the right term-- it's the inline message next to or above the form/element that changed or was submitted.

I thought flashes were easier to see (not only for people with special needs). As it turns out, when you make things more accessible, everyone wins.

I went through a phase where I used toasts because it felt like everyone was using them and my product/design was "old". I happily went back to flash messages when I came back to my senses.