I will be retiring them at some point. But they are just meant to be 'training wheels' ... if you will, so they still have a purpose. As I stated in the introduction video, I would suggest you do 2-3 of the small project courses and then move into any specialization that interest you.
So for example, if you want to do Python Django, then do a simple Django video on YouTube or the help docs on the Django site. This goes to PHP Laravel, C# .Net, Node.js etc .... once you've done my foundation courses, you should be able to tackle any project tutorial out there.
Hope that makes sense?
P.S.: did you finish all my foundation courses?