I believe this has been true historically, but I’d also be wary about extrapolating outperformance from the recent past too much.
There are a myriad of companies out there making long term market forecasts, and the common thread among almost all of them is the prediction that non-US markets will outperform in the next 7-10 years (particularly emerging markets).
Granted, the difference in their forecast for US vs. international (non-emerging) has shrunk considerably over the last year, but most are still predicting an advantage in international. One example from GMO:
https://www.advisorperspectives.com/commentaries/2022/08/22/7-year-asset-class-real-return-forecasts