What happens if the application crashes without emitting this? The user is dropped in to the shell and the terminal and shell might misbehave together?
But not to trust what I just read I've installed kitty and tested it and you can type in the "reset" just fine. I hit a bit of a problem with "Entering" it, as apparently if you have numlock enabled (which I do on login) pressing "Enter" sends escape code: "^[[13;129u", but if you disable numlock it is typed in as per documentation: "0x0d - for the Enter key", which in any ascii table is Carriage Return.
And yes, issuing reset restored normal terminal operation.
Every now and they I'll want to do ^K in Vim and inadvertently hit ⌘K instead, which is fun. (`:redraw!` sorts things back out. Though weirdly it occurs to me that now that the terminal seems to somehow remain in alternate mode…)