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Canada to ban the Flipper Zero to stop surge in car thefts
(www.bleepingcomputer.com)
This is a most excellent place for technology news and articles.
Those videos are staged. The signal playback trick doesn't work on newer cars because the code changes every time you lock or unlock your car. You could probably replicate the functionality of a key fob on your Flipper, but it would need to be registered with the car's computer the same as any other key fob, which means you'd already have to have to access to the car.
There are definitely some basic attacks that you can do with a flipper. They are quite a bit more limited than what you can do with an SDR though, and I'm skeptical that they are widely deployed by anyone. You definitely can't steal a car like this, you can possibly unlock one. But hammers are much more useful in that regard and have a significantly lower skill floor.