It is not more unstable, but it is lighter which makes it feel more responsive.
If you are comparing it to the -300 or particularly the -400 they are more speed stable but that again is due to their higher momentum.
I agree about the elevator on landing at low speeds, but that is really only a factor if you are holding off the touchdown ie trying to squeak it onto a long runway, for a normal flare you should only be increasing the pitch attitude by a couple of degrees.