It's not really setting them up much, it just redirects games to it, so you don't need to open "emulator A.nds" first basically.
And as I said, you would be going by Bootstrap then most of the time, which unlike it's DSi and 3DS counterpart has a few more issues on a Cartridge actually, making the default Kernel for most cards (Wood, BL2CK, etc) the better choice, and eventually EZ Flash own Kernel too, in months or years.
But Yes, that the Card has Homebrew issues is another story, but then again, we had that talk more then enough by now I guess in any thread that the EZ Flash Parallel is currently just a Shiny Shell and otherwise pretty garbage to any 5 bucks clone lol