I don't get that take, wouldn't most people use a tool if it made you even 5% or 10% more efficient at your job after a little bit of research? Sure digging for the tool and task use case takes time but it'll more than pay back itself
So no, I don't invest a lot of attention in further optimizing how quickly I get my work done. If anything, I'd rather invest that attention in strengthening the routines and practices of my work so that it demands less conscious attention as I do it, at no loss of quality. Write a module 5% faster? Doesn't matter to anyone. Leave a workday refreshed and ripe because I've mastered my tools and workflows? Huge win for me.
I don't think anyone's against self improvement, but the cognitive overload of continually juggling multiple 5% improvements vs a possibly more-disruptive (but in reality usually more streamlined) 25% improvement down the line just doesn't make sense if you value your own time, especially if you have to essentially embed yourself as an expert into the domain to be able to follow improvements