Whilst the highlight of the article seemed to be re sharp objects, the thrust if what was being said by the Office of Transport Security person seemed to indicate consideration o a TSA Pre-check situation - easier, faster processing of demonstrated 'low risk' pax, allowing more resources to be put into others (not necessarily higher risk, just not demonstrated).
As some-one up thread said, yes, we already have metal cutlery back in planes 9at least up the front).
Personally, I wouldn't like a relaxation on the taking on board of even small scissors and blades. To say '6cm ok, longer not' to me is silly. How much time would be spend in getting them out and measuring, for goodness sake? Any pax could argue with a determination made via the x-ray. 'Hey, I know its small enough - take it out and measure it'

or 'Hey, that cutlery blade DOES have a rounded end - take it out and look at it closely'.
We all (or most of us) have been indoctrinated now. Leave the prohibitions be, just make it more efficient. Those who have been through many o/s airports know that there are more and less efficient ways to process the same number/type of pax. Even the way they re-circulate x ray machine bins! (Heathrow, I'm looking at you ...) Or the length of pre-x ray bench space to get stuff out; the ability to skip around the slow pokes, rather than everything stopping behind them.
But a TSA type pre-check would be the best place to start.