It seems like you're comparing "start from scratch in rust" to "start with an existing game engine in some other language". That's not really a fair comparison.

It seems like you're comparing "start from scratch in rust" to "start with an existing game engine in some other language". That's not really a fair comparison. there are popular game engines in rust (although i think they're mostly smaller/more niche then something like unity or godot), bevy comes to mind.