I think the point is that for ATMs, it is nice to have a nearly immediate confirmation vs potentially having to wait for the transaction to be included in a block. :-)
That also solves the double spending attacks on ATM's because some still offer zero confirmation payouts. Very recently a group of criminals managed to steal very large sums of money repeatedly by double spending, which some said it's the fault of the ATM operator, which is partly true, but a business wants to offer convenience in form of speed, and that convenience comes with a very high risk, one that Lightning eliminates.
Reading about how creative people are with Lightning apps and other developments makes me feel as excited as I was back in 2013 where merchants accepting Bitcoin was still super duper cool.
Fun fact, Roger Ver and Charlie Lee made a friendly bet 7ish months ago where Roger said that he doesn't believe more than 1000 merchants are accepting Lightning payments in 18 months. Well. He lost big time. Somewhere this or next year he'll wear a Lightning or Blockstream shirt. Can't wait.