Just for context, I’m an experienced software engineer with years of experience with both C++ and C#, as well as several others, including Rust. You can do shallow and deep copies in C# as well, it’s done extremely infrequently because it’s usually a bit of a code smell and it has some downsides - it’s inefficient both for performance and for memory.
In C# the assignment operator will copy the value if it’s a value type (structs and primitives) and copy the reference if it’s a reference type (classes). It does that because it’s a garbage collected language and it needs to track how memory is referenced and so on.
The whole debate about what languages are better is honestly a bit silly, IMO. C, C++, Python, C#, Javascript, Rust, they all serve their purpose, they have their strengths and weaknesses.
Obviously, the best answer is to improve energy storage and transmission infrastructure. Why would we waste hundreds of millions on a stupid toy power plant when we could spend 10% of that money on just running decent underground cables.