Well uruguayan citizens will get lower latency/higher bandwidth (probably) access to Google services. The only datacenter in latam for google services is in Chile, and I've seen a lot of terrible routing in latam (often stuff goes via the US for intra latam traffic).

I'm assuming this is for core google services rather than being a GCP region btw. If it is also enabled for GCP then you get data residency benefits too rather than having to store your data in Brazil or Chile, which may have different data privacy rules.