This is still a good change. It's likely irrelevant for the types of cards we would be using these days, but I remember getting hit with FTFs on USD denominated purchases back when my travel cards had a FTF. One notable example was BA's website. Even though you'd purchase tickets from their US website denominated in USD (no DCC), you'd still see a FTF on the transaction since the payment processor was based in the UK.

I've also heard a few informal data points where people have inadvertently had a USD transaction overseas using a card with a FTF not been charged the FTF. Note that these weren't DCC transactions but rather places that used the USD, such as some Caribbean islands.