It's hugely inefficient to have to pick up your hand every time you want to move the cursor (assuming you're a developer and spend a significant amount of time

It's hugely inefficient to have to pick up your hand every time you want to move the cursor (assuming you're a developer and spend a significant amount of time in a text editor). If you don't want to learn a new tool to improve efficiency that's one thing but saying that it's out of place to use the 'hjkl' keys for navigation is pretty misguided.