I'm guessing you haven't given the firewall, or the dualcast firewall, a try yet then, have you...
/facepalm..
Well, in all fairness to the poster you quoted, I think it was really reasonable for people to assume that magic was not going to work the way it does. I was totally under the impression that we would learn a spell, and then over the course of development
that specific spell would become more powerful. Furthermore, I figured that we would simply learn different ways to cast that same spell. In other words, you just learn "Fire." Then later, you figure out how to do fireballs, fire DoT, Fire AoE, Flamethrowers, Traps, etc. All of these would essentially be variations on the same spell.
Then that would simply scale up as your skills and perks went up.
Instead, the system Bethesda made is this awkward hybrid of the new concept and the old. Old spells still become useless in time, which is dumb. To get stronger, you still need to find new spells, instead of just strengthening your existing ones. But at the same time, you can't craft the spell yourself, you only have the options that the game
gives you, apparently crafted by an NPC somewhere that is far more powerful than we, the player character.
It just doesn't make
any sense to do it that way.