As stated in the original announcement, for existing users (including those outside the US), tokens will still get transferred over into their Gemini account. This is true even without the fix coming out early next week.
With this fix, existing users who are in a “Logged out” state will be able to log in again to (1) see their Gemini BAT balance in the Rewards UI, and (2) be able to use that balance to tip.
So, it’s the opposite of a useless fix.