This seems like a natural outflow of a company design process that
(a) prioritizes security highly
(b) prioritizes regular users over developers
(c) does not allocate sufficient resources to the product to thoroughly cover all the bases
(d) is developed by people in North America, for whom the USA === the whole world, and are used to near 100% seamless internet connectivity with latency < 20ms.
I love macOS, but their software generally has issues with flakey internet connectivity and long latencies - down here in South Africa, ~400ms RTT is not uncommon.