I’m just a user, not a developer, and could not possibly be more frustrated. 
3 days last week I had to call a neighbor to let me out of my own house because the automated lock controls didn’t work. (We’re now moving lock control to a nonST controller.)
Read this thread: the frustration isn’t limited to coders.
When things that work on Monday fail on Tuesday, it doesn’t matter whether you’re a coder or not. It’s frustrating.