I think he meant 100 Mb/s, which is much more reasonable but still pretty high for a single person. The average bitrate of a youtube video is about 6mbps.

An average constant bitrate per person in the evenings is perhaps around 10 Mb/s. So 25 million people could use this assuming 100% satellite use.

Even at 100-1000x oversubscription, this doesn't seem like a solution for the "half of humanity" that the article claims this will affect (~3.9B people as of today).

I certainly find Starlink interesting, but I think its impact will be a lot smaller than the author does.