Don’t worry, nothing that has been discussed in this thread affects your ability to do what you’re talking about. What you’re trying to do simply requires checking if a player owns a badge or not.
This thread is about Roblox making changes to make it harder for people to use API endpoints to learn about the mere existence of badges that haven’t been released yet by writing external code that fetches information about it, such as its name and description. There is no way to steal badges. The closest thing to a badge being “stealable” that I can think of would be if there’s some security vulnerabilities in the way you coded your badges that would allow an exploiter get a badge without working for it, but that doesn’t have anything to do with what this thread is about.