Pulled directly from his bio on his website:
"Unlike many Traditionalist groups we do not engaged in debates, or arguments concerning Validity of Orders. Such arguments cause further wounds to the body of Christ and are not conducive to the practice of the true religion"
What I'm hearing: "I don't want anyone asking too many questions."
Alright, perhaps that's not the most "charitable" take, but it certainly seems a prudent possibility.
"Valid, schmalid! C'mon in and play, 'Is He here?'"
I'm sorry, but in this day and age and esp. in "trad" circles, if someone doesn't make with their lineage, then walk away.