You don't need 100 Mbps to access educational content. Khan Academy looks fine in 1080p. And even if it didn't, Netflix says their 4K streams only need 15 Mbps.
You don't need 100 Mbps to be a remote knowledge worker. Video calls need a stable connection with low latency—I wish more people used ethernet—but that connection does not need to be particularly fast. An upload speed of a few megabits is sufficient.
You also don't need 100 Mbps to apply for jobs, read the news, chat with friends, or participate in the political process. Any noticeable improvements in page load times above 25 Mbps will be marginal at best. It's fun to hate on how bloated modern websites are, but the situation isn't anywhere near that dire.
I'd posit that if a non-technical person with a 20+ Mbps connection thinks their internet is too slow, they probably aren't actually getting 20 Mbps, most likely because of spotty wifi. And if they really are getting 20 Mpbs, they're probably reacting to latency rather than bandwidth.