What a lot of this comes down to is many skeptics are not fully cognizant of the salient facts of church history and the typical skeptical arguments that were already thoroughly answered in the first few centuries AD. Instead they Google websites of Skeptic's Bibles and arguments that largely illustrate the ignorance of their authors to both ancient church, world history, and Biblical texts within their context. Since most of the public has little interest in tedious research or having any moral restraints, they latch on to these canned arguments already made that sound convincing and use them to justify the course of action they have already chosen for their lives. Additionally the liberal college professors are very much in vogue to propagate these unfounded theories.
Two examples are:
1. The council of Nicaea determined the canon. It was not even discussed at Nicaea as a item of business.
2. The virgin birth/deity of Christ was an invention of the later councils of the Nicene Church. The ante-Nicene Church prolifically wrote about this doctrine as a fundamental test of faith.

Last edited by Thunderstick; 06/28/19.