Tourists can still use Bitcoin in Bali. but it's not for direct payment transactions. but tourists can also exchange their Bitcoin first at a Bitcoin ATM machine which has also been on the island of Bali, Indonesia since 2014.
Namely at the Address:
✓(1)Bitcoin ATM in Kuta, Bali – Bitcoin.co.id Information Center, Legian Kaja Street, No. 455 Kuta, Bali Indonesia
✓(2)Bitcoin ATM in Ubud – Hubud, Jalan Monkey Forest 88X, Ubud Gianyar Bali 80571, Indonesia
( Sourch: https://www.finansialku.com/apakah-ada-mesin-atm-bitcoin-di-indonesia/ )Use the Bitcoin ATM Machine and have fun on the island of Bali.
The article you quoted was published in 2018 when Indonesia still allowed bitcoin ATM machines to operate in Bali. But as far as I know, the bitcoin ATM machine in Bali has been deactivated and is no longer operating.