What? No, lol. He doesn't have any musical education, let alone being a director of the Philharmonic Orchestra.
EDIT: Oh, you mean Viktor Stoyanov? If it is the same person, not everyone is a great orchestrator and the music he was given doesn't lend itself to much orchestral texturing. Not only that, but he probably phoned it in, why would the director of the Philharmonic Orchestra painstakingly orchestrate some vidya gaem music? Besides, he has a Bachelor's in "music technologies", i.e. nowhere near a composer. AND usually the minimal amount of work video game and film composers put into whatever is also a factor. They don't meticulously craft anything, why would they? As you can see, Slavov's music was mainly praised, only derided by those with good taste, so there's no need to do anything more. You can very easily compare the treatment of the orchestra between a great composer and a composer of films/video games by just listening to a single movement of a
symphony by any famous "classical" composer.
That should be enough to get my point across, but there's also the fact that I don't know what they mean by "orchestrator" in this context, it might mean anything. It might mean mastering or some other kind of technical work, or even supervising that technical work. He certainly didn't sit down to write musical notes.