The natural philosophies had been flourishing under the church, and the renaissance set them back by reviving classical Greek ideas of nonsense such as elements and humors.
Natural Philosophy
could not have gotten us to modern medicine, because it was not empirically driven. Philosophical reasoning cannot generate novel inputs, which is
vital to the advanced physical theories we have today. Wave/particle duality could never have been devised by Natural Philosophy because it is so spectacularly at odds with how everyday life works.
Same with light not needing a medium to travel through, because the entire concept of a wave to Natural Philosophy and early science was the propagation of force through a medium. But the terms of science demand
proving your work with physical experimentation, which lead to increasingly contradictory properties of a medium for light until it was finally disproven.
Really, you can basically rattle off almost everything about modern electromagnetic theory and have a solid brick of things Natural Philosophy would never have arrived to itself... Quite especially the unity of electricity and magnetism!
"The Renaissance" is not a singular block one can generalize like this. You saw the revival of classical Greek ideas simply because people actually got exposed to those ideas for the first time in centuries, and then saw robust disproofs based on empirical observation of phenomena that showed they
could not be correct from the processes the Renaissance brought forth.
The artistry and romantacism goes hand in hand with the manic scattershot of reasoning at odds with precedent. Not everything from a societal shake-up will prove to be better than what came before, but the important matter that there
was a shakeup allowed for truly improved mechanisms of reasoning.
And this is without getting into the usual retorts like asking "how many angels can dance on the head of a pin?" Angelology was a
wondrous example of how rotten pure philosophy is as a means of ascertaining useful knowledge of the physical world, because
everything about it was utterly divorced from any hard benchmarks truly confining it to reason, turning it into little more than a popularity contest between "great" thinkers obsessing over nothing remotely able to be shown as real.