That's really a lot of nonsense, though I'll grant you that "progress-stifling, working-against-science church" is a long-entrenched meme[+].
[+] https://www.quora.com/Why-did-science-make-little-real-progr...
[+] https://www.quora.com/Why-did-science-make-little-real-progr...
People see science as this "amoral entity" that generates truth, and anyone who opposes it to be the anti-Christ of societal progress. You have to understand that people are behind science, and people are flawed.
In other words, statistics don't lie. But the people who collect them do.
I've always found it funny that so much of the movement was examining original sources instead of what someone wrote about them, yet so many people read the renaissance works and don't look back to the original sources just before them.
The Renaissance itself didn't occur ex nihilo in a benighted world of ignorant superstition either; it was a wholly organic evolution of the great learning and development that occurred before it, especially in the 12th and 13th centuries. The period we call the "Dark Ages" were certainly more chaotic than the era of classical antiquity, etc., but by no means did culture and learning stagnate.