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Revealed: car industry was warned keyless vehicles vulnerable to theft a decade ago
(www.theguardian.com)
This is a most excellent place for technology news and articles.
The OP's quote leaves out the "It is being targeted at Hyundai and Kia models." part. From what I can find those brands are (were?) susceptible to rollback where sending an old code reactivates codes that came after it
https://www.reddit.com/r/flipperzero/comments/z2fq6h/broken_rolling_code_system_old_sent_signal/
I think you would still have to wait for the owner to use their keys.