It is even appropriate to call it a millennium year, as long as that term is used to recognize that it is the year that completes the millennium. Perhaps I protest too much. It's just a numbering system. The calendar is allegedly dated from the birth of Christ and most scholars believe that it is off by several years anyway. Doesn't it make sense to just go ahead and declare 2000 to be the start of the new millennium and join everyone in celebration.
Scripture says the truth matters, even the little truths.
In fact, it says that how we handle the little truths sets the foundation for how we handle the big truths. After all, it was the majority that called for the crucifixion of Jesus. Do you believe everything you say in the creed. Martin Luther may have had his doubts and struggles, but he did not preach his personal opinion. We all have our doubts, our opinions, things we would do differently if we were God or even the head of his church.