This is about the third or fourth time going through this.
Firstly: 35' at the end of the clearway is only relevant to an engine failure scenario. You should be much higher than that with two engines operating.
Secondly: If they'd had an engine failure at or just prior to V1 it looks unlikely they could have stopped. If they'd had an Engine failure approaching the threshold, it looks unlikely that they could have made a safe takeoff.
Thirdly: Boeing say in the Training manual that an aircraft on a normal takeoff should easily achieve a height 150' at the opposite end of the runway. On this basis alone, this was not a normal takeoff according to the aircraft manufacturer.