Sweet Alert came up before and people made this same pedantic and unimaginative addition

Its presented as a replacement for alert so pointing out that it's not a drop-in replacement seems relevant to me at least. Even if most alert usages can easily be replaced by this (somewhat dubious depending on your definition of "easily"), additional work will still need to be done for many (most?) of them.

Also being able to add a "blocking" call in JavaScript would be a _big deal_, so noting that this does not do so seems like something worth mentioning.