By your flimsy standard, Newtonian physics were also disproved, and now we have quantum mechanics. Despite that fact, we have retained those elements of Newtonian physics to the extent and in the cases where they apply. Moreover, we never would've had quantum mechanics had we not first had thermodynamics, universal gravitation, and differential calculus.
Not quite. Newtonian physics is still accurate in its original context. Very little of what Darwin proposed is defensible in any context.
Aaah but there's a difference. As you so well point out, Newtonian physics has been very fruitful in enlarging our knowledge. However, evolution has always led us onto the wrong path. Spontaneous generatio, inferior races, melding of traits, junk DNA, and much more. So evolution has been disproven much more than once and has led to wasteful research and hindering of research more than once. Like I said, it's time to be done with it before it does any more harm.