Given the complex nature of the situation, of course 100% is not possible. But tighter code IS possible. Its a matter of proper design, and coding practice. The fact of the matter is, that most game companies have no real incentive to invest in the types of personnel who would help them with these types of problems.
Well... Dark and Light is back...(Face Palm...) Early Access? This shouldn't have seen the light of day for at least another 9 months to a year. Given the games past history, one would of thought that they would have been much more careful about their initial impression.
Gabe is really dropping the ball with some of the antics Steam has been allowing over the last couple of years.