My opinion is that - particularly with the wisdom of hindsight - it is right to say this is a serious lapse in judgement of Jensen. Especially given the potential security/strategic implications.
However to then make the jump to this saying something about his qualities of leadership is a big leap. His leadership record is exceptional: decades of foresight, strategic risk-taking, and execution. It seems wrong to allow one episode to outweigh three decades of evidence.
And from the reporting I've read, it isn't actually clear if she was a spy (i.e. directly trained and employed by a PRC intelligence agency).
The details (businessperson working in a viable business) make it seem more like she was a willing asset, who likely had a PRC intelligence handler.