There's nothing silly about it. Chipsets these days are so cheap and common, that it'd be really hard to find one that can't be a "PC". Modern HDMI with HDR/Dol

There's nothing silly about it. Chipsets these days are so cheap and common, that it'd be really hard to find one that can't be a "PC". Modern HDMI with HDR/Dolby/compression is already pretty complex and requires quite a bit of software/firmware. Even if most of the processing was done with DSPs, I assume it'd be hard to manage all of that without any CPU. And if you wanted anything nicer, like streaming media straight from a NAS, "casting" to the TV, or Bluetooth speakers, then it'd need a non-trivial OS anyway (and there's nothing wrong with such features when they're not used as an excuse for DRM and surveillance).