There is nothing to disagree about. Any shares up for sale are eligible for MM's to use for trading. And, any shares in any margin account. The ONLY ways to keep them from using shares is to not put them up for sale, and not hold them in a margin account.
You can't 'lock' share by putting them up for sale. MM's don't HAVE to buy them, they short them and then replace them. You give them permission when you put them up for sale. You can deny that all you want, but it's true. Experienced traders understand that. Those that have not studied MM's don't understand how they work.
Jeez, doesn't ANYONE know how MM's actually work? I spent a LOT of time learning that stuff, so I couldn't be fooled by the things traders say.
Call any market maker and ask them how they work. Ask direct questions, such as "if I put my shares up for sale at 10 X the current share price, can you still use them for trading?" The answer is "yes".
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