Editing in Vim feels like a bit like editing in `ed` if you ever tried it. It's a bit like "type in a command, and see the result". You type d3w and you will get 3 word deleted. In Kakoune every keypress results in visual response. You type 3w, you see that 3 words were selected, then you hit d and they get deleted. It makes editing much more interactive, smooth and less error prone.

Unlike the other responder, I am actually not big fan of multiple selections and prefer search and replace. But once in a while multiple selections come handy even for me, so I don't mind them being there.