Since I tweet something like this every two or three weeks or so, a reminder that Jesus wasn't kidding around when he told St. Peter "you are Peter, and on this rock I will build my church, and the gates of hell shall not prevail against it." https://twitter.com/Ameen_HGA/status/1296193065452015618
Saying "Christianity is in danger" without specifying *what* that danger is (in danger of losing their ability to witness to others, in danger of being persecuted [which is unlikely in America but whatever]) is blasphemous at best, and openly denying scripture at worst.
This is also a great thread in general that you should spend three minutes to read.