This provides potential benefits just like abyss mods. And most of those benefits translate to isk/h in some way, just like abyss mods.
Apples and oranges.
The way in which abyss mods are broken (by making fits imbalanced), is impossible in decryptors.
Even if you get an amazing roll on a decryptor, it is consumed by the next job. You cannot keep re-using an overpowered decryptor in a risk-free environment to print isk like you can abyss mods in PVE. You can’t use it to repeatedly win pvp match ups because your enemies weren’t as lucky in their rolls as you.