I know that statement had to be more out of frustration than anything else. It is one thing to debate the merits of Joseph Smith, the other Books that the LDS accept as Sacred or various teachings but it was a valid point made that there cannot be any modern day apostles based upon Scriptural definition of that title alone. If you are trying to say that these are men that actually lived during the time of Christ and somehow slipped through history to today then any credibility you have attempted to obtain would be lost.
If the LDS church claims these men are living apostles then I would suggest it should give one reason to question why the church would make such a statement. All Churches are earthly establishments and subject to various errors. I would be interested in hearing someone with the LDS, you or any other person, explain how they can accept saying that these men are apostles, if in fact that is a valid belief or statement of the Church. Each and every teaching of every Church should be under question by the believers who attend and belong to those churches. So just what qualifications do these men possess or have that qualifies them being called "living apostles" by the Church or it's members?