I think you understand quite well that it is quite clear and simply. However, you seem to have an agenda against the Church and therefore cannot afford to allow others to see it.
I have no agenda against the church... because YOU have an idea of church doctrine doesn't mean it is the church's position. As you know, your opinion differs to that of most believers.
Your opinion doesn't make it so, nor does it make it representative of the LDS church.
The LDS church has never clarified doctrine. Your statement from the church website tells us nothing regarding doctrine other than that it can be found in scripture and published work. This doesn't tell us what is or is not scripture only that it may be there. It doesn't say that there may be doctrine outside of published material, or that all scripture is there. It doesn't tell us what doctrine is true or not true. The statement is next to worthless when trying to figure out what is or is not official LDS doctrine.
You said there may be doctrine that is not true. So, doctrine may or may not be true no? What is incorrect about this statement. Are you saying all doctrine is true?
Of course doctrine can be changed at any time. It has in the past and according to believers it most certainly can be i the future... you know, further light and knowledge and all that.
Your belief seems to be that all those who agree with you are right about doctrine, those who disagree are simply less informed. Of course other believers think you are off base and they are the ones who have a better understanding of what is or is not doctrine.
Just pick a topic and see how believers disagree about its meaning, doctrinal status, and ultimate truth.
Noachian flood, Book of Mormon location, Adam and Eve, polygamy, Adam/God theory, nature of God, temple rituals, Book of Abraham origins, requirements for the CKHL, etc. etc. etc. etc. etc., believers all seem to have an opinion, but no one seems to know. The church teachings seem to mean nothing regarding truth.
~dancer~