Luckily it's not that bad for me anymore, but I still sympathise with everyone with slow connection speeds, because you can't "just" download an update.
This feature used to only be in macOS Server but is now in normal macOS too.
I'm in Sydney, at home my fastest option is ADSL2+ which gets me 15-16Mbit on a good day (7-8 if it's rained much recently...)
My ISP contacted me mid last year to offer pre-signups for our "National Broadband Network" on Sept 4th. A couple of months ago it became public that the old HFC cables they were planning to use were completely not up to the task, with major problems reported pretty much everywhere it'd already been rolled out, and they've now stopped and new HFC rollout using that (Optus) coax for at least 9 months.
I _think_ Sydney Australia counts as "the developed world", but even 100Mbit for me right now is at least a year away...
https://www.statista.com/statistics/616210/average-internet-... https://www.recode.net/2017/9/7/16264430/fastest-broadband-s...
And I don't live in the country either, I'm a 10 minute walk away from a technical university und multiple research institutes.
Attitudes like this are why it's okay for websites to have a 1 MB javascript payload.