Years after the game's release, this argument still annoys the dickens out of me. The idea that there are gamers out there whose definitions of D&D are a) so tight that this holds true, or b) so rules-oriented that this holds true is just mind-boggling. I can't imagine how those who think like this must view change in the rest of the world they live in. An inflexible mind is an awful thing to have to nurture.
As someone who *doesn't* care whether the game I play feels like old school D&D, I still find your reply rather closed minded.
I like D&D Vancian(ish) magic. I can live without it perfectly fine.
But it clearly resonates as "in the key of D&D".
But if that is someone's taste, that should be respected.
It is not "inflexible" to have a preference.
Rather, I'd say it is much more a question of being closed minded if you call differing tastes "inflexible"
To put a different spin on a comment I already made to you, if you are so "mind-boggled" and annoyed at inflexibility, then why do you waste so much time converting material from one system to another. If you would simply be flexible and use the intended system, you could put all that time into other things. But you are so mind-bogglingly inflexible that this isn't an option.
Now, I'll immediately counter that last by clarifying that I do understand and respect that you get a lot more fun out of 4E and the effort is worth it to you. But that is giving you a fairer shake than you offered.
And the magic system is just a random example out of dozens available.
It is cool for people to like what they like.