It argues that some keystrokes are smaller than others, because that's what "less" means -- it describes the size (not the number) of the things under discussion.
Goerge W. Bush once said there would be less soldiers in Iraq in a subsequent year. I immediately pictured the same number of soldiers, but each of them smaller.
Again, it's not about correctness, it's about clear communications.
A quote from the last link: "The basic rule for precise use of 'less' and 'fewer' is simple (though we slip often). Use 'fewer' with countable, individual things, and 'less' with uncountable amounts, volumes, etc. So: 'I should drink less coffee,' but 'I should eat fewer doughnuts.'"
> 'Smaller keystrokes' is, in context, nonsensical.
Goerge W. Bush once said there would be less soldiers in Iraq in a subsequent year. I immediately pictured the same number of soldiers, but each of them smaller.
Again, it's not about correctness, it's about clear communications.