Well there's no convincing you then.
The pros of modal editing is well documented, and I'm not even arguing about the superiority of vim over the likes of emacs.
People who believe using cursor to select, move, copy stuff are better than modal editing, even after all the argument, is probably not going to be swayed ever. As an almost pure vim user, I know how my own speed are significantly improved ever since I adopted vim and its modals, and I don't need to mentally construct keystrokes just like most people don't need to look at a keyboard to type.
The demonstration are mostly some edge cases that don't really happen, but the general speed over general editing, some `V}y` here, some `ci(` there, some `Vjj2>`, `c-vwwGx` etc is what makes vim really shine. And no we don't have to dig a dictionary to type those things, all I had to do was to open vim since that's how muscle memory works.