Godot

Copying and pasting a script for agents would not really take you a few minutes though, would it? Because you have to actually find that script and really, you should write it or understand how you are enabling it. With unreal you'll do this in the first hour. It's like a few blueprint nodes and you'll get it to happen. With Godot, which I love very much, it's a good portion to set up nav mesh + agent nodes + the script. This assumes you know what you are looking for and what you are doing. In Unreal these things are literally built for you with examples or even just engine code. Out of the gate, you just create a new character, on begin play you tell it to move to and give it the result from "get random reachable point in radius" Which Godot doesn't even have a way to get a random location within a radius in the engine. Much less a reachable one.

Godot is great but it lacks a lot of quick tools and is less newcomer friendly than Unreal in my opinion. If you tried this in Godot you'd hit a lot of snags. One of the major ones I can think of is that the navigation server isn't ready for queries on _ready(). So if you even tried to get a random point and project it to the navmesh you'd get back 0,0,0 using the same methods as above, which in godot also requires more setup like having to setup a navmesh. In Unreal the navmesh is setup and ready from the moment you hit create a new project.