Facebook doesn't even listen to countries beyond tier 2 as per their own disclosures - https://www.theverge.com/22743753/facebook-tier-list-countri...

I very much doubt that they listen to countries in tier 1 and 2 also. If not for the fear of US's relatively stronger regulations, don't think Meta would even pay attention to any complaints in US either.

This would not change with the change in leadership in Meta simply because 18Bn is fairly affordable for Meta's scale, but they should be worried about setting the legal precedent (though they denied any wrong doing).

Other countries may not have the same ability to impose penalties owing to their weaker laws also.