Not good at all.
I wonder if this "brake defect" should have been picked up sooner?
It must have been flying or intended to fly as it had crew on board.
Could the "dragging brake" not have been detected sooner? E.G., more power required for taxi, to have got the brake get as hot as it obviously did. If it had been on a flight, one would hope the decreased acceleration would have been spotted on an accelerometer readout, before V1.
I have great respect for wheels, tyres and brakes, among other devices on aircraft as I am very aware, that these items can very quickly lead to the loss of an aircraft, should faults arise or they become neglected.
All due respects to engineers I am always suspicious of an aircraft that has just come out of maintenance.