I haven't encountered any single instance of attempted DCC in my travel in multiple country / regions last and this year.

I have travelled to China, Turkey, Finland and Russia and used my cards, and none of them attempted to do DCC on me. Whenever I pay, I just inserted my card and the machine spit out the receipt in local currency immediately.

However, when I was in Istanbul airport, one of the restaurants offered "multiple currencies" (including TRY, USD, EUR and some more) on the checkout, but it was before I insert the card and applicable to cash as well, so it was not DCC but instead the merchant offering multiple currency payment, so I tell the cashier to use Turkish Lira and inserted my card.