So I had this thought back when Mando Season 2 aired but never discussed it. With Book of Boba Fett coming soon I’ve been thinking about it more:
Bo Katan makes a point that totally works as a retcon that has actually helped me accept the prequel version of Boba Fett as “canon” (for what that’s worth) and allows me to continue enjoying the OOT as the only version of the original trilogy, even as it tied in to the prequels and all the Disney content.
Basically, Bo Katan immediately recognizes Fett as a clone the second she hears his voice. It’s logical to assume MANY people would recognize the clone voice (even if it doesn’t really make sense that they would all have the same accent). It makes absolute sense that he would disguise his voice (and keep his face hidden) during Imperial times, especially around someone as prominent as Vader, for a multitude of reasons.
And it also makes reasonable sense that he would drop the secrecy by the time of Mando with the Empire having fallen.
Anyway, all that’s to say the version of Fett in the OOT (with the original Jason Wingreen voice) works perfectly fine (if not better, honestly) with the overall story of Fett as presented in current official media. It’s a small thing, but one I greatly appreciate. And I kinda suspect it’s intentional on some level.