Does it though? Even without LLMs, any sufficiently complex software can fail in ways that are effectively non-deterministic — at least from the customer or user perspective. For certain cases it becomes impossible to accurately predict outputs based on inputs. Especially if there are concurrency issues involved.
Or for manufacturing automation, take a look at automobile safety recalls. Many of those can be traced back to automated processes that were somewhat stochastic and not fully deterministic.
Yes, yes it does. In the every day, working use of the word, it does. We’ve gone so far down this path that theres entire degrees on just manufacturing process optimization and stability.
Impossible is a strong word when what you probably mean is "impractical": do you really believe that there is an actual unexplainable indeterminism in software programs? Including in concurrent programs.