Although blueprints are great, once you have to touch C++ it’s not so great. Tools like Rider for Unreal make it much, much better though. C++ is king of game dev and everyone hates it. Unreal is not regular C++ and handles a lot of resource management for you, but it’s still C++.
I’ve used C++ for near 10 years and I don’t hate it (that’s a lie I hate it with a passion), but C# is just has much more flexibility, has better error messaging, easier to integrate 3rd party libraries, better package manager, better namespaces, no header hell, no memory leaks, exceptions with useful information, reflection, and so much more. C++ has raw speed.