Not to dismiss the effort by dev, but all Unreal engine games look photoreal these days. My point is that photorealism does not show effort these days.
No engine in the world can make bad assets look good.
Oh wow, I didn't know engines provided that much functionality. Thank you.
Most of the review is about the art assets, and I doubt the big ones (e.g. the trains themselves) are off-the-rack Unreal assets. An engine like Unreal 5 will cast your assets in harsh relief. Which is to say, if your game's assets look custom and look good in Unreal 5, it does indeed demonstrate effort and skill.