The topmost claim was that software quality degrades over time, as entropy must increase. Both of these claims are false, as the topmost commenter did actually say correctly - entropy only grows globally, but it is possibly to decrease it locally at the expense of some larger increase somewhere else (think of a fridge - it decreases the randomness of molecules inside (cooler) by heating the outside).

If we accept this analogy, then with enough care, a software project can improve in quality (paying off technical debt for example, or extensive code reviews by experts). But even letting go of this possibly flawed analogy, while there is a tendency of entropy-build up, very easily observable in my home folder, there exist software projects that do improve in quality over time.