As a G'raha enjoyer, I am in the camp that it is JB, but an unfortunate combination of exhaustion, poor mic set-up, and lackluster voice direction in DT as a whole has him sounding so awful in this latest patch. Tiredness or a swollen tongue isn't enough for this degree of distortion, but I (perhaps naively) have a hard time believing SE would stealth-recast a beloved character and VA. His 7.4 performance sounds almost like his Jurassic World character to me (higher-pitched, more nasally, none of his usual graveliness), and despite a very rough start, his later lines sounded closer to G'raha's typical cadence and inflection even if the brassiness never came through. As for the missing English line in the trailer, there's a possibility where JB simply didn't record his lines in time to be included in the trailer, given how busy he's been in the last year.

That said, people are clearly upset and unsure of JB's future with the game given his successes in the last few years, so SE should be scrambling to assuage fears. Threads like this should not be necessary, and SE's silence is disappointing and disrespectful to those who love this game and the VA's who make their favorite characters come to life. And if it is JB, his lines need to be re-recorded in a studio; his voice in this patch is downright jarring, and completely shattered my immersion in the story. Clearly, many others agree.