You sense wrong. Used to be SDA but no more for that very reason. Ellen White carries as much weight as your Pope with me, which is very little. When Jesus was tempted by Satan, did he answer by "It is written" OR "Church tradition says"? Well, which one? And as much as churches (yours too) wish to misinterpret scriptures, the Sabbath is still the Sabbath. No record of Paul (or any of the apostles) carrying a crucifix or saying 3 "Hail Marys" is there? The Bible is Gods Holy Word because that is the way He wanted it.
Ellen White was a false prophetess, just as much as Joseph Smith was a false prophet.
tell me, without “church tradition”, how would we KNOW which books are canonical and which are not?
for example, without “church tradition” why do you accept the Book of Hebrews as Scripture, when no one knows who the human author was?
btw, the Sabbath is still the Sabbath, Christians just don’t keep the Sabbath, never have and never will.