An automated email is unacceptable in any context there, even if they had only been there for a month. An automated email is a dishonest deflection from executives having to face the people their decision making affects.

I don't know an honest owner that wouldn't pull even their worst worker aside and tell them why they're fired at a minimum. I've seen CNC shops where the owner finds new jobs for the people they had to lay off.

Hold the wealthiest corps accountable.