It is a common argument when sizecoding is discussed. "You say it is 64k, but I need a multi-gigabyte OS to run it...". 35MB can't hardly be called sizecoding, but that's the same idea.

It is true, but besides the point because we have no choice. It is not the 1980s anymore and we can't access the hardware directly on personal computers, vendors don't let us. Not that we would want to, for portability reasons. So we depend on abstraction layers, which are not particularly lightweight, and here, it is a working browser supporting WebGL2 and WASM. You simply can't have a game engine running on modern hardware without a software platform. For the sake of argument, we could imagine a lightweight (tens of MB or less) WASM bare metal platform with simple pixel pushing hardware.