I am seeing it as well. And am recommending Lambda School to just about everyone who asks ;)
The main problem I see is the steep learning curve. The intro lessons are facile enough. Anyone can setup VS Code, and install an App Engine SDK. But by the time they get to modules 3-4 ("designing the data schema"). They are ready to throw in the towel.
At some point, a student requires one-to-one mentoring and repeatable reinforcement. Like learning a second language or playing the piano.
Also check out this nice write-up in Dealbook today on Lambda's model:
https://www.nytimes.com/2019/01/08/business/dealbook/educati...