There is perhaps only one group around here that claims their comments are perfect...and they harbor the greatest errors. Your remarks are interesting and germaine.
I will add to your statements that when the Holy Spirit is taken out of the way there is no question that He still will wield influence. You note this correctly. Paul's comment there is largely symbolic. He means that whatever restraint the Holy Spirit has exercised upon the earth, will be significantly reduced to cause every terrible thing to run wild.
After all, the universe lives, moves, and has its existence owed to the continual sustaining word of the Triune God. If He were fully/completely absent, the universe would slip into non-existence.
But, good points.
thank you.