Firstly, printing efficiency.

Secondly, convenience.

Sacrificing gameplay effectiveness for things that aren't in any way related to gameplay seems like a bad idea.

Thirdly, cost dynamic. This works like Extra Munitions in that it becomes more cost efficient the more you take.

Fourthly, huge ship crits. having three Bomb Loadout-style cards gives you a really big shield against Hull Breaches: you'd need four to hit an important card.

Fifthy, it locks out the other two fix mods.