For one, an almost universally overlooked bit of history is how absolutely crucial muslim scholars were in preserving classical texts, in keeping an unbroken chain from the Classical Age until the Renaissance. Places like Al-Andalus -- muslim Iberia that is -- or Bagdhad, were the centres of knowledge in the world in their time, and also places of surprisingly high religious tolerance, where Christian, Jewish, and Muslim scholars studied and discussed together. Many translators and schools of translators were founded and supported, and that's the path countless Greek and Roman tomes took until our days: translated to Arabic, later "rediscovered" by the West.
Among Christian monks, on the other hand, for centuries starting around 300-400CE the highest goal was asceticism, one of the corolaries of which was that one should waste no time studying or preserving pagan texts or indeed anything which were not: prayer books, missals, homilies, responsories, etc. An innumerable amount of works were lost during the centuries where Christian monasticism was most active. If indeed the monks preserved that ancient, pagan knowledge, then how can this be?
Not to mention the fact that Christians post-Constantine and Theodosious were engaged in brutal and relentless persecution and suppression of non-Christians, so called "pagans", and pagan art, pagan temples, pagan beliefs, and of course, pagan literature. They burned temples and all the art therein, they burned libraries, they suppressed academies and professors, either by force or by ending the state's patronage,
This paper is a great read, admittedly biased in its sources but not misleading (it cites contemporary opponents, rather than christians): https://www.jstor.org/stable/pdf/27899562.pdf