finally someone is taking a big swing in this space!
The current tutorial-ecosystem for devs kinda sucks. Want to learn something? You've gotta watch a long youtube video that chucks all the knowledge at you fullspeed, or take a 30 hour coursera course that gives you way more than you need and skims over the details, or you have to hit your head against verbose docs that scare away novice devs.
I believe the bottleneck is that while there's tons of smart devs out there, its difficult for them to produce and distribute engaging content that helps spread their knowledge.
If you make it 10x easier to produce/distribute the stuff already in a devs brain, you could accelerate the world via education. This could even go to enterprise. Most tech companies have the notable "expert [pick ur language] dev" that just knows way too much about a certain thing. You could enable this dev able to produce, maintain, and benefit from internal courses that educate their peers across the org instead of publishing cryptic README files files that go stale after a month