For the current recruitment crisis says the head of Ofsted.
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I think he is very wrong playing down the damaging role of Ofsted.
Perhaps yes, some heads don't give the support they should to NQTs (I've certainly seen one hounded out by a weak, exhausted head verging on a breakdown) when they should have been helped more) but I don't think this is because heads are crap and thoughtless, it's because Ofsted are on their minds all the time, threatening to remove their job if they put a foot wrong.
Ofsted have got it all wrong in my opinion and do far far more damage than good to our schools.