The trouble is, you need to complain all the way back in 3E, and complaining about this in 5E, is complaining after the horse not only bolted, but lived a long life in California, had kids, and died quietly in its sleep surrounded by family.
As soon as 3E let you just take a level in Wizard if you felt like it, any notion of "inborn talent" was gone. Period. I'm sure some people did complain but they would have needed to have kicked up a real stink. Either way - "inborn talent" is just not compatible with the 3E/5E approach to multiclassing.
Arguably, you could say dual-classing in 1E/2E already eliminated the idea of "inborn talent" for Arcane magic. Because in 1E, if you'd rolled well stats-wise, and you were bored of being a Cleric or w/e, you could say "I'm a Magic User now!".