Latency has improved over the years, New York to Sydney is now a 210ms RTT. Compared to ~300. Improvement in Last-mile latencies and Bufferbloat. ( Not perfect but still a little better than 2015 ). I only wish someday we could somehow get Hollow-core Fibers for long distance cable and backbone. Could have lower the New York to Sydney RTT by at least 40ms.
Akamai no longer publish the Internet Report. But I wont be surprise if average Global Internet speed is up by at least 5x. And Mobile Network is up 10x. And we continue to improve on those figures. As the world move to Fibre Optic with High Speed PON and Mobile with 4G/5G.
WiFi 7, 4G/5G, and Router are all thinking latency during its design. It is amazing to think by 2025, how much better things could be compared to 2015.