Tucker's had very good shows on this, I think he's only been objective in seeking the truth.
The "expert" has not disproven the idea of a false flag if that expert says that
Iran was testing its own chemical agent. Maybe Assad didn't order or otherwise authorize the politically insane use of poison gas against his own people. If Iran was planning to let Assad take the blame--and Iran surely didn't want credit for the attack--then it
was a false flag attack.
I haven't read the article, but the first sentence in the post suggests something is fishy.