The use case of vim is not using an insane amount amount of arrows/ctrl/shift for everything.

It's like a mechanic using just one adjustable spanner and one screwdriver to e.g. replace a clutch. It's ok if you really don't have anything else, but any good mechanic will use a set of good tools. (sorry in advance for the car analogy).

BTW a modern vim setup with CoC is not very short of an IDE, but at lightspeed.