Ok, explain this to me. How can someone

Rule they aren’t eligible in the future and make them ineligible retroactively contrary to this ruling? I can see if it’s overturned in the future they become automatically ineligible

If that’s the case, then no ruling can be acted on until the appeal process is complete regardless of what is decided by earlier decisions?

That’s like something was legal when I did it but in the future a law was passed and make it illegal, so I get retroactively charged for something that was legal at the time I did it.