It depends on the station. Some stopped to sell tickets and just sell refillable cards.

But you can use cards, ticket, or phone in any station.

The only thing you can’t use, which, in 2023 is pretty stupid, are payments cards (so neither Apple Pay and Google Pay). They even had a long fight with Apple for years to get full access to the NFC API instead of going with just payment cards.

Ironically, there are a lot of other cities in France that are compatible with payment cards, but not Paris.

I can imagine that it’s not the same scale to upgrade Paris ticketing vs the smaller cities but since they’ve done a major overhaul anyway …