As someone who has spent many, many hours deep in the guts of the edX codebase, this news does not bother me.

For what it does, the codebase is extremely sprawling, with layers upon layers of abandoned architectural directions. A lot of code for not a ton of functionality, and very basic functionality at that.

Of course that all is secondary to the actual success it has found, and good for the the project for making it happen. But, if this move ends up being a catalyst for investing in alternatives, that will not make me sad.