In fact, ordination is not really a Bible teaching.
Sounds good, but is it true? I don't think so. One of the chapters in DA is entitled, "Ho ordained Twelve." And then there is the following description of Paul and Barnabas' ordination:
"Both Paul and Barnabas had been laboring as ministers of Christ, and God had abundantly blessed their efforts; but neither of them had previously been formally ordained to the gospel ministry by prayer and the laying on of hands. They were now authorized by the church, not only to teach the truth, but to baptize, and to organize churches, being invested with full ecclesiastical authority" (LP 42).
I suspect this is another example where an argument in favor of WO has not been well thought out or verified, or is being used anyway.
It is a tradition which developed over centuries in the Catholic Church and then was adopted by Protestants, including Adventists.
Now someone needs to explain how the Catholic Church "developed" ordination in or prior to the first century in time for Jesus to ordain the twelve and in time for Paul and Barnabas to be ordained.
Ellen G. White held the credentials of an ordained minister for decades and orthodox, loyal Seventh-day Adventists in China have ordained 17 women as ministers, starting in the 1980s.
This is misleading if the entity making the decision about who is going to be ordained is in reality the communist government.
Recall also that there has been an influence pushing the idea that just as in China they have the three self movement whereby the locals fund themselves, administrate themselves, and evangelize without assistance, there also ought to be a fourth self, whereby the locals come up with their own theology. And if that theology doesn't include the mark of the beast, 1844, and the sanctuary, that is all right, since those doctrines don't scratch where it itches.
So I'm not sure how far we want to push this China stuff.