I think the plan behind bip101 was that the average internet connection will likely keep getting faster with time, even today some people have 1Gbit fiber connection at home, others are probably watching 4k netflix right now.
Average internet connectivity improvements only give about 30% per year optimistically. BIP 101 was far more aggressive than that.
And while some minority of the world has 1 Gbit available, requiring it would be saying nobody else can use Bitcoin.
I'm only slightly rural and I can't get better than 5/0.5 Mbps yet.
A minority of the world has >1Mb/s persistent internet, persistent power and a computing device capable of running Bitcoin. If some people can't run Bitcoin full nodes now, it's not a failure - nor will it be the case if some can't run it in the future.
There are literally hundreds of millions of people that have persistent home broadband sufficient to run with larger blocks. It's not relevant that you aren't one of them.