The only thing that annoys me about Unreal’s “C++ experience” is their need for a custom non-standard build system, which just sucks and is the root of all problems you encounter when using Unreal, especially if you try using something other than Visual Studio + Windows.
And sure the documentation could be better but on the other hand you have the full source code, which is invaluable. And all those macros are annoying I suppose.
Other than that I think it’s just fine.