This is typical for BBC articles. E.g., https://www.bbc.com/news/world-us-canada-59358070 or https://www.bbc.com/news/uk-england-derbyshire-59359263. I have no idea why this is their policy, but it isn't a special feature of this article.
All 3, Y and 2021+ S and X will work with just Bluetooth.
But the convenience of just walking up to your car and it unlocking with your phone is enough for many people to take it for granted, and forget those other entry methods at home.
I know I'm often pretty sloppy about having backup printed information when I'm traveling for example. And, while I do still carry a (small) wallet (really just a business card holder), even that is becoming increasingly anachronistic. Also maps while hiking, etc.
You should always keep the fob or keycard around for safety.