That very fluffy ebiketips review provides no tips about how to repair it, or get it repaired.
No mention of torque arms, and the motor actually span out of the drop-outs during the test, so he just bolted it back in tighter. This is a motor with regen too! I bet that he didn't use the regen because it's horrible. If he had, the motor would have spun out again.
In fact, he didn't comment on how good or bad the regen was. I suspect that he figured out quickly that it was a deal-breaker, so immediately switched it off or to minimum. You notice he talked about climbing, but not descending.
What he said about installing it in a bike with deeper drop-outs is just utter nonsense. It's pretty clear he knows nothing about installing motors, proven by the fact that it span out.
Was this review any worse than any other on-line review? No. It's almost impossible to get truly honest and independent reviews. Even owners tend to be biased. Take them all with a pinch of salt and take notice of what they don't say.