My Java days are long gone, but modern C# code is not overly complex and, if you use fp principles where you can, even really quite simple to read. Ofcourse you have OOP design pattern addicts who write hard to follow overarchitected stuff, but your language cannot prevent that; people write convoluted stuff in any language.

Blaming just generics for that does not work imho; in Java people were writing really insanely over complex code close after the first release; I had an ex C++ guy before 2000 writing Java code that used every design pattern in The Book, everywhere he could and it ended up with 1000s of files and those strange long names that became the standard for Java a few years later.