Many don't know, and others think a bargain
Who really knows what goes on in the minds of pink sheet stock "investors"?
Clearly MJMD has issues, and the reverse is a further indication of that, but most who follow the company probably don't know about the RS yet, and won't until tomorrow when the symbol changes to MJMDD and see that their shares are unavailable for trading (watch the questions that pop up tomorrow morning.)
Some might have bought today because they think they're getting a bargain, whether they knew about the reverse or not. Unfortunately for them, their shares will be hit with the reverse tomorrow morning, and they'll be locked out of trading them for a couple of weeks (unless they have special connections with a MM or the company) while they wait for the transfer agent to get the new shares back into their account.
And BTW, probably less than $7K traded today.
Finally, the possible open tomorrow will be $7.00, and if there is a trade at that price, there's a good chance the percentage increase/decrease calculation will show a 9,999% increase, and some will come here wondering about why, and that will be the first they know of the RS.