I completely agree. My game dev past in Massively Multiplayer Online Games directly led to work at FANG in cloud engineering. Work on optimizations, storage, comms speed, and stateless flows led to large improvements in product performance. All of that emerged from running into roadblocks on games engines. Even rendering was useful in understanding how to get better performance and frame-rate on client applications -- engineers don't typically think in terms of frames-per-second when writing UI code. My experience in cache optimization for game objects directly applied when used to speed up trading platform transaction speeds. Experience with threading was also given and not common in normal engineering (at least at the time).
I actually think it's the opposite. Nearly every aspect of game development is challenging and transferrable. I can't speak entirely for people who did more of their work in Unity (I was in the 'build it from scratch' generation) but I suspect any high-performance game requires an equivalent level of getting deep down into the code and having a critical understanding of your structures, algorithms, and how your computer primitives fundamentally work and interact.
That alone will usually put you into the upper tier of applicants to any tech company. Your resume, if written correctly, should easily highlight all of this.