A good debugger is very easy to use. I remember the Visual Studio debugger or the C++ debugger on Windows were a piece of cake 20 years ago, while gdb is still painful today. Java and .NET had excellent integrated debuggers while golang had a crap debugging story for so long that I don’t even use a debugger with it. In fact I almost never use debuggers any more.
Version control - same story. CVS for all its problems I had learned to use almost immediately and it had a GUI that was straightforward. git I still have to look up commands for in some cases. Literally all the good git UIs cost a non-trivial amount of money.
Programming languages are notoriously full of unnecessary complexity. Personal pet peeve: Rust lifetime management. If this is what it takes, just use GC (and I am - golang).