I don't quite get what this can be used for.

It cannot be used for direct customer interaction, it's simply too limited.

Nobody wants to say "lock the front door", they would just do it

And even quite direct commands like "tighten security" are not understood by the model

It's quite normal for embedded systems to be built in one go and thus not have to care about ABI

In my opinion, that's the correct thing to do anyhow, even for bigger systems