Hi
Im a big fan of the example projects for learning purposes.
I guess thats what they are for 
However, some of them have benn kind of neglected as for compatibility with current engine versiions.
For example, the Black Jack game is only compatible with engine versions up to 4.10.
The Blueprint spline track (cool stuff from Zac Parrish) only goes with 4.11, or lower.
Also some example content like the GameTextures Material Pack is only usable up to 4.12
The Mixamo Animation Pack stops at 4.10.
I can understand that you drop some old stuff because you cant maintain everything forever, but stuff like the Realistic Rendering, or stylized Rendering are kind of timeless evergreens… Yet they are only compatible with engies until 4.6.
So in a nutshell: Please show the learning resources / example content some update love
Cheers,
Klaus
EDIT:
Just double checked in the launcher download tab. There is says for stylized rendering: compatible with 4.1-4.13.
However, in my depot, it appears like this:
So maybe the launcher is just stating compatibilities wrong? 