Many don't believe it. MMs are in fact suppressing the Bid on UNGS. CDEL keeps stacking and re-stacking 1s. That's because someone has to sell their shares for someone to Buy on the same day. And, that wait is called a Bid. But, people are trying to convince you it's not.
Here is a silly example. It's a Taco Bell example because that's where I'm likely eating dinner. Wayne has all of my Steak, Lobster, and Oysters Rockefeller money. The MMs scam works like this: Someone just ordered food inside the restaurant. But, before Taco Bell can sell you food at the drive-thru, they need to use the money from the first buyer. After they buy enough ingredients, they can fill your order.
Some would agree, that scenario is really silly. Others would call it a Bid.