And this isn't even a new thing for Programming. We already learned this lesson once.

Go look at a nineteenth century mechanical signal box. When you, through inattention or even malevolence, try to release signals so that train B can plough into train A, the lever won't move because it is physically impossible due to mechanical interlocking, you need to move a piece of sold metal through another piece of solid metal and it won't go.

Do not rely on humans to do boring but important things, they are very bad at this.

I didn't say "make no mistakes". I said "using its features unwisely". If you can't write software that manages shared mutable state, then don't do it. The world still needs lots of simpler programs.