I don't know; I'm only a few years younger than John Carmack. IDEs with decent debuggers were a thing from the mid nineteen eighties already. They were widely used and you can learn to work with them in a few afternoons. And decent IDEs are available for many languages. Including Rust, C, and C++, etc. Also on macs.

Not using tools that are there is a choice that a lot of people seem to insist they need to make. I've heard all the excuses on this front and it usually boils down to people believing in their super skills, discipline, and intelligence to the extent that they believe they don't need those tools. Some people actually feel threatened by a tool telling them they are doing stuff wrong. They get annoyed and frustrated by that. It's irrational.