I have to say that I agree with the criticisms the article offers…if this is the intent of WOTM. I think that the 10 Commandments are a good starting place to illustrate our sinfulness, but this presupposes the person to whom you are speaking accepts at least somewhat of a Christian foundation. Otherwise you end up “selling” what is a debatable theological issue of Gentiles being “under the Law” to someone who isn’t even saved (and this before you can even get to the gospel of Christ).
I made this point earlier in another thread. I think the WOTM is the best way of doing evangelism, however it is not the only way to do evangelism. For example at work I cannot use it, as I have to be the sinners friend...