That is not true.
No, it's not true. But saying so makes some people feel big, I guess.
What does your church believe that is supported by Scripture alone? Every belief I've seen discussed is shaped in some way by "Tradition" or the early theologians that your church calls "church fathers".
On those occasions when a discussion breaks out with Born Again Christians and the BAC's point out the lack of Scriptural support for something the RC's believe then the "bigot" bombs start flying. In the end it's all they've got.