That's true, but it may have something to do with console players not liking "spreadsheets" and needing a lot of hand holding. Todd Howard said in an interview that he did not like spell creation because the menu screen for it reminded him of a "spreadsheet" and he wanted all of his menus to be pretty and look like they were designed by Apple.
I play on a console myself and I really wish Bethesda would stop "simplifying" the game by reducing the number of skills and taking away options like spell creation. Spell creation worked just fine on the console and as an option, it could be ignored by those who didn't like spreadsheets or simply did not want to take the time to figure out how to craft good spells.
Here's the thing, though: could it
really be ignored?
In
Oblivion, the stock spells were sub-par, to say the least, especially if you were going up against top-end enemies; if you didn't abuse 'Weakness to X' stacking, you were never going to use Destruction to kill much of anything past about level 30 or so.
Skyrim doesn't have that issue, as HP pools are an order of magnitude smaller in almost all cases, however it still has the problem of early spell obsolescence; unless they add damage scaling, which, unfortunately, I don't see happening, Spellmaking would be the only way to keep using those spells at higher levels.
If spellmaking is the only way to keep early spells relevant in the late game (assuming they even should be, which is a whole topic by itself), then it would essentially be mandatory for anyone wishing to keep using those spells. Spellmaking would also be the only way to make most Master-level spells actually worth using, since it could be used to either reduce their ridiculous casting times or amp their output to a point commensurate therewith. Given that the major complaints about Destruction are output and Master cast times, not using spellmaking as a counter would essentially mean rejecting the solution to one's complaints, which would be cause to wonder why it was asked for in the first place.
As such, I don't see how it would ever actually be optional, since I doubt anyone would wish to keep using the base spells given the opportunity to have much better versions. The lack of 'Weakness to X' spells means it couldn't be abused into the ground like it was previously, however it would still essentially reduce the stock spells to sources of effects, much like the stock magic items are for Enchanting (with a few exceptions), which isn't good design. That said, I wouldn't object if it was added, since said stock spells are, admittedly, somewhat lackluster, although I would honestly prefer they dropped the mindset of 'good spells must have crippling magicka costs' and reworked them accordingly.