Backend engineers who proudly don't know how to write frontend code and vice versa. Professional engineers who refuse to learn how to use modern IDEs and monitoring platforms. People who don't know how to quickly prototype software as if building something without complete rigor is beneath them. People who refuse to learn or work in certain programming languages they deem inferior.
And rather than seeing this as a gap in their own skillset they think of it as a mark of intelligence or moral superiority.
I suspect we'll see another divide around AI assisted coding with some engineers simply refusing to learn how to use the tools effectively to make themselves more productive as a point of pride.