This is a win for any customer that has already booked tickets. Any customer that still needs to book a ticket for July is not going to be flying Lufthansa (if they have any sense) - which is LH's intention! If this blanket move applying to all flights (if it stays through to the end of July) is going to cost LH a lot - I can't believe that all flights for July are already totally full.
M&M award flights still seem to have the same availability.