Haha .. no you didn't put me on the spot! I just thought I'd explain my situation a little more as it could differ!
My initial voice was around 134-144 Hz (male voice) .. which is pretty high for a male voice, so as soon as I could speak, my voice was much higher, and believe me I can't go even close to my old voice anymore. HOWEVER, the botox helps with that, so I'm awaiting the dreaded month 4 when it wears off.
However, I've been doing voice acting/rapping/singing for a long time, and it's helped a lot with me sounding better, so my case might be a little different from yours. I also mentioned in one of my videos about learning the "Speaking from the neck" versus "Speaking from the chest" trick too. I'm just a fast learner. And I suppose when you really want something, you work for it quickly!
But as for am I stuck with the pre-Hz voice, not at all. They pretty much cut off all that low frequency so that it makes it impossible to "Accidentally" fall back into.
I think that's the best I can explain things, if you want to know anything else, post? <3 Haha ...!