I think a lot of people find the learning curve of c++ fairly extreme, especially when considering the amount of knowledge to do idiomatic programming in c++ required to “do things elegantly.” C# and related languages tend to have idioms baked in closer to the syntax and grammar. My view of c++ after 30 years of it is it’s great if you’ve got 10 years experience programming it within a team of seasoned c++ programmers who shows you the ropes. Even then I think rust is the language I wished for all these years (albeit not for game dev yet). Finally, for the reasons rust isn’t great for game dev, c# and ilk generally have excellent reflective and dynamic natures making them sort of the sweatpants and old T-shirt language for game programming.
That said, it locks you into using stuff like mono and stuff for cross platform which makes me a sad.