I can safely say that this is not what AG teaches - this guy appears to be playing loosy-goosy with matters to promote atheism.
“I can safely say that this is not what AG teaches”
What in the world are you talking about?
The AG teaches that anyone who speaks in tongues has shown evidence that they were baptized by the Holy Spirit and that “Holy Spirit baptism occurs only after someone has truly accepted Jesus Christ as their personal savior.” You can verify this at time 4:25 in this video by the AG general council:
http://ag.org/top/beliefs/our_core_doctrines/baptism_HS/