Note that Godot is still not great at high-end 3D games because of various performance issues and missing features. (The reddit link explains how the Godot third-person demo is showing its weaknesses)

https://www.reddit.com/r/godot/comments/9n53ij/wha t_do_people_here_make_of_this_detailed_and/

Fortunately, the next expected release of Godot (4.0) might be able to solve a lot of those problems. It's going to be ported to Vulkan, the renderer is going to be multi-threaded and optimized, and a lot of the lighting related functionality from major game engines is going to be implemented.

https://www.phoronix.com/scan.php?page=news_item&px=Godot-4....

Sounds like they focused on making a small product for a specific niche and (now that it's taking off like wildfire) they are fixing things.