It's an engine that puts everyone else before programmers - which is great for artists and designers as they can blueprint animations and simple things. It's bad however when the performance relies on programmers whose time is already torn between trying to do things The Unreal Way™️ and fixing bugs caused by someone doing more than they should have in one big and messy blueprint hotpot.

It’s use is basically “by the time you build an engine that can compete you will be dead”

Performance optimizations are easy, movement is easy. (Compared to starting from scratch) but are you going to spend time on that or something else?

Fortnite runs on phones, they have various demos running on consoles.

Every one knows it’s the best but dumb kids blame the engine for some reason and garner the above response because it points out they have no idea what they’re talking about.

As for the other guy’s comment, programmers work in C++. The Unreal way is to take that code into drag/drop blueprints for designers so they aren’t messing with the programmer’s code. An example involving movement is I recently coded a movement system in C++, now in blueprint there’s a settings menu that exposes the variables so the designer can set jump height, speed, falling speed.