I have lived in Spain many years (born there) and then moved to UK in 2015. Traveled mostly in Europe and North Africa. Also once to Argentina and Tokyo. Since then I have noticed a major difference in airport security depending on the airport:
In LHR, LGW the airport security only asks for the laptop to be taken out (and liquids but this is out of the scope of this question)
In LCY with the new screening system they have in place they tell you to leave everything in your hand luggage and just put it through (I think every airport in the world should be like this).
In EU airports like FRA, GVA, ZRH, ATH, PMI, IBZ, MAD, BCN, GRX, MXP ( I have been through these myself several times in my life) they make you take out “every electronic device” as in: big headphones , power banks, cameras, lenses, laptops, tablets , e-readers, literally every device and this is extremely inconvenient unless you just carry your phone and its charger cable.
In regards to EZE and NRT, they were like in London (LHR or LGW) so no issue there.
I have experienced a similar but not so strict thing at SSH and CAI airport security. There you have to scan your luggage (big and small) before you even enter the airport! Also at security before boarding gate you need to take off your shoes as well no matter what kind of shoes… I understand boots and the like but trainers? This can be material for another question (just more context for the current one),
The main question is then: why? It’s incomprehensible to me that this is like this.