Cardtronics noted the potential impact of cryptocurrencies on its business prospects in its most recent 10-K annual report to shareholders filed with the U.S. Securities and Exchange Commission (SEC). The tech was mentioned alongside other digital payment methods, including apps like Venmo, that would reduce the need for people to carry cash.
https://www.coindesk.com/atm-cardtronics-cryptocurrency-business-risk/
While in the long run cryptos might pose a risk to ATM operators, in the short-term they could present an opportunity as well. Since cryptocurrencies are seen less as a means of payment and more as an investment, a lot of people are looking for an easy way of purchasing/selling bitcoins. ATMs can provide the convenience and privacy required. For an ATM operator, it doesn't matter whether their machines dispense bitcoins or fiat.