What's wrong with saying we had it wrong before?

In all fields of science and even in other religions, many leaders have said outright: "we thought this was true before, but we discovered it was wrong and now believe this as the correct thing based on this new reasoning/evidence.

It feels like so many Muslims are scared to admit that certain beliefs they hold are just not congruent to reason, evidence or reality. Music is an easy one, we base it off an ambiguous verse (lahl-hadith) and a set of hadith that are just as ambiguous and not corroborated. Many scholars have said before that music is not haram and yet we cling to this belief because... Its always been like that?

It doesn't just apply to music but to freemixing, awrah, hijab, aqeedah and more. Why can we not as an ummah have the intellectual and epistemic humility to say we get it wrong sometimes? There's no harm in that, in fact, there is growth and benefit in that. It rebuilds trust in our scholars because we are capable of reconciling conflict between our reality and our creed and actually work towards a greater world for both muslims as individuals and as nations. If we don't grow, we stagnate, then rot and eventually die.

I would love to know what your thoughts are on how we can encourage that culture of progress and endeavor in refining the deen?