Easy Debian is a snapshot of Debian at a certain time. With everyone at the same level, they know which packages tend to work well, decent, not well, terrible, or simply not at all.

When you start updating and messing with packages you start to get a more unique system and thus can experience different problems, have different packages work (but also not work) etc.

Easy Debian as a whole is a testers area. Nothing is guaranteed, and no one can promise anything beyond "Well, it worked for me!"