I dont really understand the context of the statement, but I would imagine they are saying its like pulling money out of the economy, but thats not true, its like trading two currencies.
Not really but according to me it means the value and the importance of the bitcoin is now increasing then the money and the cash so it is the best time for the cash to use as he saving and the value of the bitcoin is increasing, it is the best income of the bitcoin and the profit of the bitcoin will be very high so get the profit and try to buy the more bitcoin so you will be able to use it as the money but to be honest this is my own thinking not the post one.