If rephrase that as “use moments of inefficiency to teach juniors how to use their tools better”
Showing someone how to use column edit, or macros, or automated method refactor, will change their productivity dramatically. It’s the role of leaders to teach and empower.
The article makes a good point about how little of software development consists of typing. This matches with my experience also, over several decades. There are so many things to optimize before "code input speed".
20 years ago, one of our guys hurt his arm and had his arm in a sling. The customer asked for a 50% discount on his rate - it was clear they saw software development as "fancy typing" rather than a process of turning business requirements into functional software.