That makes sense. I put up a somewhat similar thread about a year and a half ago when I was personally feeling really frustrated about not being able to recommend the platform to friends who weren’t already strongly technical.
( I should add that the one big change since that thread was created is that there is now a community – created wiki.
Anyway, Smartthings is marketed as an easy-to-use plug-and-play system, and it’s neither of those. It’s very powerful and flexible, but that’s not the same thing. But that’s a different conversation than seeing if there’s a voice notification method that would meet your use case.