So if they haven't put me in danger, why should I care? I don't see any argument for why anyone should care about these firings.
And that, right there, is the Republican mindset.
It doesn't affect me so fuck everyone else.
They were cut because they are disposable probationary employees.
No, they were cut because they were probationary employees. That doesn't mean they are disposable. It doesn't mean they're not doing mission critical stuff.
This is the thing you're not getting. As has been patiently explained to you, it just means they're in their first year or in some cases 2 years of employment.
People starting a new job don't just sit around for a year or two doing nothing important and then suddenly start being given the important stuff once they're out of probation period. As I've said, I'm not particularly arguing that there aren't too many federal workers, but if you need to make cuts you do so in a strategic way. You don't just bowl in and arbitrarily say that anyone who has been there less than a year or two is out the door. The fact they're having to re-hire some people demonstrates it was a stupid way of doing things.