Of course unfortunately not everyone has a connection like that. But can understand how someone might have missed it.
I work in B2B and we frankly put way more effort in than we should have to optimize bundle size before just making the assumption that everyone has a good connection and we didn’t really need to worry about it.
Can you provide links to a page that is 250 MB download?
The images on the page load quite slowly. Wifi is terrible here due to way too many hotspots and way too many different businesses providing their own wifi. And the trunk which it is on is also horrible in it's own right so even when the wifi connnection is ok, it's still broken.
So no, this is not fine.
(ping is between 100-4000ms on a good day and speeds between 100Kb/s to about 40Mb/s (that's bit, not misspelled byte), on a bad day it's None)