I did not like this. This is why:

* Embedded example video doesn't work on Firefox.

* Reasoning reads more like post-hoc justifications to me.

* Last and most important: does not explain what "toasts" are.

Aside: The word in its default English usage is not countable. Making a plural means it must be the usage of clinking glasses of alcoholic drink, to indicate a salutation to a person or thing.

They seem to mean "toaster notifications". I only know this as an option in Pidgin. I Googled it and found this:

https://bootcamp.uxdesign.cc/toast-notifications-how-to-make...

That page suggests that this bad, broken English is a standard usage in some niche community or communities. IMHO that doesn't excuse it.