M365 Multi-Geo is designed to meet data residency requirement. M365 Multi-Geo is getting mature day-by day. it has some limitations which need to be well aware by customers.
ADOPTION OF MICROSOFT 365 MULTI-GEO AND USER PERFORMANCE
If you are enabling Multi-Geo in Microsoft 365 to fulfill your Data residency/regulation/compliance and Data in Rest requirement, would it not help to improve your end user experience ?. I believe, It’s a debatable question.