Nah.
What broke the power of Christianity weren't the masses rising up, it were states jealous of the church's money and influence breaking it over their knees so they could have that power instead. The German nobles siding with the protestants absorbed much of the local church's land and wealth. Henry VIII created the Anglican church to get new pussy get rid of Rome, revolutionary France (led by the urban upper class, in case anyone forgot) took in the church's money to finance its wars.
It wasn't quite as radical everywhere, Spain was more subtle about it (still did it, though), but yeah.
And the entire reason this happened was that the catholic church wasn't a tool for the state to use as it saw fit. Not a good one, anyway. It kept trying to assert its independence and fought the state time and time again.
Tellingly, in areas where the church had always been subservient to the state (orthodox Christianity; the newly emergent state churches in protestant Europe), this process didn't happen/immediately stopped again.
The loss of faith among the general population post dates this process by many centuries. What exactly caused this in particular is, honestly, still subject to debate. I suppose it'd be a bit glib to say "Steampower".
As for islamic secularism... nah. It had brief periods of intellectual curiosity in the middle east and Spain, but both of these were 1. quite short, and 2. ended before the barbarians came in. In Spain, deep conservativism settled in half a millenium before Castile took over. In the middle east, all the Mongols did was eliminate sad memories of once great thought that hadn't produced anything new or valuable for over a century already. And it'd, at any rate, be a bit rich to blame the Mongols when said same Mongols did support proto science aplenty in the form of the Yuan dynasty (which the Ming dynasty promptly trashed because it was associated with the Mongols. Thus, while Marco Polo could be super impressed with advanced Yuan technology, by the time the Jesuits arrived in China two centuries and change later, Chinese math and technology was already trash. Thanks, Ming!).