So because there is exactly one right explanation of mathematics, only one of the schools that teach it from toddlers to PhD's is correct?But there is exactly one right explanation for everything. That explanation is included in the infinite number of "beliefs" ("beliefs" is more than just religions. It's all explanations imaginable, for what the ultimate truth is about the origin of everything).
Or are you willing to concede that the variety is a necessary consequence of the various individuals?