> doesn't matter that Congress didn't specifically require...

Actually it does matter. Chevron deference is gone. If Congress didn't specifically approve this method, it's not legal

To be fair, that's not exactly what Loper Bright says. It holds that the courts should read the statute independently and not assume that Agency rules or procedures are prima facie controlling where the statute is ambiguous.

That's not what the end of Chevron deference means. It means that if Congress didn't specifically approve this method, a court may find it illegal much more easily than was previously the case. The deference in "Chevron deference" was from the courts towards administrative agencies.