Speeds of 100Mbps to a mobile are more than enough for 99.9% of users. Even if your streaming a 4K movie on your phone - which is overkill as it would be near impossible to tell the difference between 4K and HD on a phone screen. You will still have plenty of bandwidth left for any apps running in the background. So I don't see a problem with those numbers.
Although as others have pointed out, they may go down as more people get 5G capable handsets and the backhaul bandwidth gets saturated.