>an ATM that only demands the chip instead of forcing you to insert the whole card
Inserting the whole card is also a security measure to be able to take the card away if an incorrect pin is entered 3 times, or if the card is left in the device after leaving the ATM.
That's just more work for the ATM owner, determining whether to confiscate a card, keeping track of which cards have been confiscated, disposing of confiscated cards... consequently it has been over a decade since I've seen an ATM capable of confiscating a card. Since I prefer cash for everyday transactions and move around a fair bit, I feel I have sampled a wide range of ATMs in midwest USA and some small portion of ATMs globally.
Inserting the whole card is also a security measure to be able to take the card away if an incorrect pin is entered 3 times, or if the card is left in the device after leaving the ATM.