I am in the sim more than the air these days and more and more I see the approaches being done with hands on knees. Almost always the reaction was they didn't realise they were not guarding the controls!
Not too surprised by your comment.
I believe manufacturers, Airbus in that matter, unconsciously or not push for that as they elected to implement the notion of frozen command controls (sidesticks and thrust levers) which do not materialize the actions of the automation.
The pilots have now to exclusively rely on their vision and watch carefully theirs screens to know what's happening.